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  • 1.
    Ahmadi, Alireza
    et al.
    Luleå University of Technology, Department of Civil, Environmental and Natural Resources Engineering, Operation, Maintenance and Acoustics.
    Franson, Torbjörn
    Saab Aerosystems, Linköping.
    Crona, Anneli
    Saab Aerosystems, Linköping.
    Klein, Markus
    Saab Aerosystems, Linköping.
    Söderholm, Peter
    Integration of RCM and PHM for the next generation of aircraft2009In: 2009 IEEE Aerospace Conference: Big Sky, Montana, USA, 7 - 14 March 2009, Piscataway, NJ: IEEE Communications Society, 2009Conference paper (Refereed)
    Abstract [en]

    With global cuts in defense budgets, air forces have to sustain the same level of readiness with a reduced number of aircraft. To succeed with this challenge, it is not sufficient to improve current maintenance concepts, but new ones also have to be introduced.Traditionally, the development of on-board functions and maintenance concepts has been performed rather independently. The new approach is to focus on an integration of these two developments and to adapt a life cycle view together with a disregard of organizational boundaries.To facilitate the necessary change, a study is performed by Saab and Luleå University of Technology. The study focuses on the possibilities to integrate RCM and PHM in a cost-effective way. The aim is to reduce the workload of maintenance development and to find out how to combine RCM and PHM to achieve a joint development of the aircraft and its maintenance program throughout the aircraft's whole life cycle.The paper describes some similarities and differences between RCM and PHM. Furthermore, the paper describes some aspects of how RCM and PHM are complementing each other and what kind of adaptations that has to be done to achieve a successful integration. For example, a good application of RCM early in system design might generate a pull for PHM-technology integration and motivate design changes of the aircraft. Simultaneously, available PHM-technologies might strongly affect the selection of applicable and effective maintenance tasks in the development of the initial maintenance program. PHM might also support a surveillance of the maintenance program's performance. The description is highlighted with examples and experiences from the Swedish Gripen fighter aircraft. Finally, the paper also outlines some suggestions for further research.

  • 2.
    Ahmadi, Alireza
    et al.
    Luleå University of Technology, Department of Civil, Environmental and Natural Resources Engineering.
    Kumar, Uday
    Luleå University of Technology, Department of Civil, Environmental and Natural Resources Engineering.
    Söderholm, Peter
    Luleå University of Technology, Department of Civil, Environmental and Natural Resources Engineering, Operation, Maintenance and Acoustics.
    On aircraft scheduled maintenance program development2010In: Journal of Quality in Maintenance Engineering, ISSN 1355-2511, E-ISSN 1758-7832, Vol. 16, no 3, p. 229-255Article in journal (Refereed)
    Abstract [en]

    Purpose – The purpose of this paper is to present issues and challenges of scheduled maintenance task development within the maintenance review board (MRB) process, and to find potential areas of improvement in the application of the MSG-3 methodology for aircraft systems. Design/methodology/approach – The issues and challenges as well as potential areas of improvement have been identified through a constructive review that consists of two parts. The first part is a benchmarking between the Maintenance Steering Group (MSG-3) methodology and other established and documented versions of reliability-centred maintenance (RCM). This benchmarking focuses on the MSG-3 methodology and compares it with some RCM standards to identify differences and thereby find ways to facilitate the application of MSG-3. The second part includes a discussion about methodologies and tools that can support different steps of the MSG-3 methodology within the framework of the MRB process. Findings – The MSG-3 methodology is closely related to the RCM methodology, in which the anticipated consequences of failure are considered for risk evaluation. However, MSG-3 considers neither environmental effects of failures nor operational consequences of hidden failures. Furthermore, in MSG-3, the operational check (failure-finding inspection) is given priority before all other tasks, whereas in RCM it is considered as a default action, where there is no other applicable and effective option. While RCM allows cost-effectiveness analysis for all failures that have no safety consequences, MSG-3 just allows it for failures with economic consequences. A maintenance program that is established through the MRB process fulfils the requirements of continuous airworthiness, but there is no foundation to claim that it is the optimal or the most effective program from an operator’s point-of-view. The major challenge when striving to achieve a more effective maintenance program within the MRB process is to acquire supporting methodologies and tools for adequate risk analysis, for optimal interval assignments, and for selection of the most effective maintenance task. Originality/value – The paper presents a critical review of existing aircraft scheduled maintenance program development methodologies, and demonstrates the differences between MSG-3 and other RCM methodologies.

  • 3. Ahmadi, Alireza
    et al.
    Kumar, Uday
    Luleå University of Technology, Department of Civil, Environmental and Natural Resources Engineering, Operation, Maintenance and Acoustics.
    Söderholm, Peter
    Risk of operational consequences of aircraft system failure2010In: International Journal of Pedagogy, Innovation and New Technologies, ISSN 0973-1318, E-ISSN 2392-0092, Vol. 6, no 2, p. 149-158Article in journal (Refereed)
    Abstract [en]

    The purpose of this paper is to describe a methodology for identifying different operational consequences and associated costs caused by aircraft system failure, in order to facilitate and enhance the capability of taking correct and efficient decisions when analyzing the cost-effectiveness of maintenance tasks. The paper focuses on the operational consequences of failures that lead to delay. To identify the operational consequences of aircraft system failures, Empirical studies of possible scenarios involving aircraft failures and their operational consequences for a commercial airline have been performed. Empirical data were extracted through document studies and interviews, guided by the application of an Event Tree Analysis (ETA). In order to effectively utilize the knowledge of field experts in the assessment process, a pairwise comparison technique was adopted for quantifying the contribution of different factors to the operational. The work was performed together with experienced practitioners from both an aircraft manufacturer and commercial airlines, which contributed to a continuous verification of the outcome of the study.The study shows that the proposed methodology based on ETA and pairwise comparison can be used to identify and quantify the cost of operational consequences of failures in aircraft operation, when there is no sufficient and reliable data.

  • 4. Ahmadi, Alireza
    et al.
    Söderholm, Peter
    Luleå University of Technology, Department of Civil, Environmental and Natural Resources Engineering, Operation, Maintenance and Acoustics.
    Assessment of the operational consequences of aircraft failures: using event tree analysis2008In: 2008 IEEE Aerospace Conference: 1-8 March 2008 : [Big Sky, Montana]., Piscataway, NJ: IEEE Communications Society, 2008, p. 1-14Conference paper (Refereed)
    Abstract [en]

    The purpose of this paper is to describe a methodology that supports an assessment of the operational consequences of failures in aircraft systems and its associated costs, in order to facilitate a correct and efficient decision-making during cost-effectiveness analysis of maintenance tasks within scheduled aircraft maintenance program development. The paper is based on empirical studies of possible scenarios from aircraft failure to operational consequences in commercial airlines. Empirical data was extracted through document studies and interviews, guided by the application of an Event Tree Analysis (ETA). The analysis was performed together with experienced practitioners from both an aircraft manufacturer and commercial airlines, which contributed to a continuous verification of the outcomes of the study. The proposed methodology, which is based on ETA, is considered as a valuable support in the assessment of the operational consequences of failures within a MSG-3 framework. The proposed methodology focuses on assessing the operational consequences of failures and associated economical losses. Hence, in order to enable an estimation of the maintenance tasks' cost-effectiveness, the methodology should be further developed to include a cost assessment of the applicable maintenance tasks. The proposed methodology could be adapted as a support to those involved in the development of aircraft maintenance program. The operational consequences and the probabilities of the proposed event tree can be quantified by the aid of historical data or expert judgment.

  • 5.
    Ahmadi, Alireza
    et al.
    Luleå University of Technology, Department of Civil, Environmental and Natural Resources Engineering, Operation, Maintenance and Acoustics.
    Söderholm, Peter
    Kumar, Uday
    An overview of trends in aircraft maintenance program development: past, present, and future2007In: Risk, Reliability and Societal Safety: Pproceedings of the European Safety and Reliability Conference 2007 (ESREL 2007), Stavanger, Norway, 25 - 27 June 2007 / [ed] Terje Aven; Jan Erik Vinnem, London: Taylor and Francis Group , 2007, p. 2067-2076Conference paper (Refereed)
    Abstract [en]

    The purpose of this paper is to describe the trends in aircraft maintenance program development during the last 50 years, including the reasons for the aircraft industry to change its view of maintenance. The major milestones and fundamental reasons for such development are also discussed and illustrated in relation to a flow diagram, which shows the logical and chronological order of the trends. Finally, the paper describes some possibilities and challenges as regards applying Information & Communication Technology (ICT) within the emerging approach of e-Maintenance in order to enhance the surveillance of aircraft maintenance program performance.

  • 6.
    Aldenlöv, Jens
    et al.
    Luleå University of Technology, Department of Business Administration, Technology and Social Sciences, Business Administration and Industrial Engineering.
    Bergquist, Bjarne
    Luleå University of Technology, Department of Business Administration, Technology and Social Sciences, Business Administration and Industrial Engineering.
    Eriksson, Per-Erik
    Luleå University of Technology, Department of Business Administration, Technology and Social Sciences, Innovation and Design.
    Söderholm, Peter
    Luleå University of Technology, Department of Business Administration, Technology and Social Sciences, Business Administration and Industrial Engineering.
    Gustavsson Kärrbom, Tina
    KTH, Depteartment of Real Estate & Construction Management.
    Public procurement of railway infrastructure maintenance: a literature review2017In: Proceedings of the 9th Nordic Conference on Construction Economics and Organization / [ed] Buser, M; Lindahl, G; Raisanen, C, Lyngby: Polyteknisk Boghandel og Forlag, 2017, p. 10-21Conference paper (Refereed)
    Abstract [en]

    The maintenance of railway infrastructure has in several instances been changed from government-based to being based on public procurement, with varying degrees of flexibility for the contractor to design their maintenance work. The purpose of-giving contractors a larger freedom of choice of how to perform maintenance is to stimulate them to innovate and develop their maintenance processes. Since the contracts differ in between and there are changes in government policies over time that affects both existing and new contracts, a comparison between different contracts becomes challenging. A literature review has been conducted to understand the change in procurement strategy and how to encourage contractors to innovate. The research questions include: What procurement strategies are there? How is maintenance evaluated? How does procurement affect the innovation opportunities for entrepreneurs? The literature review focuses on railway maintenance and contract design between client and contractor. In total, 17 articles matched the search criteria and were selected for the review. To have successful maintenance service, five articles suggested partnering as a strategy with common goals in combination with good communication during the entirety of the contract. When selecting incentive plan, four articles mentions that a focus on performance-based incentives in combination with risk management is better rather than actual payment schemes. The reason being that payment is often the main cause of conflicts between client and contractor. The scientific literature suggests that improvement in incentives improves quality of maintenance, decreases delays and technical failures. The conclusion from the literature review is that partnering in railway maintenance is considered successful. With accurate knowledge about railway assets the incentive plan becomes accurate which reduces costs. The literature review is a part of a research project with an overall goal to develop a model to guide the selection of appropriate type of procurement strategy, contract and control of maintenance for a more sustainable railway system.

  • 7.
    Aldenlöv, Jens
    et al.
    Luleå University of Technology, Department of Business Administration, Technology and Social Sciences, Business Administration and Industrial Engineering.
    Bergquist, Bjarne
    Luleå University of Technology, Department of Business Administration, Technology and Social Sciences, Business Administration and Industrial Engineering.
    Eriksson, Per-Erik
    Luleå University of Technology, Department of Business Administration, Technology and Social Sciences, Innovation and Design.
    Söderholm, Peter
    Luleå University of Technology, Department of Business Administration, Technology and Social Sciences, Business Administration and Industrial Engineering.
    Karrbom Gustavsson, Tina
    KTH Royal Institute of Technology, Real Estate and Construction Management .
    Public procurement of railway infrastructuremaintenance: a literature review2017Conference paper (Refereed)
    Abstract [en]

    The maintenance of railway infrastructure has in several instances been changed from government-based to being based on public procurement, with varying degrees of flexibility for the contractor to design their maintenance work. The purpose of-giving contractors a larger freedom of choice of how to perform maintenance is to stimulate them to innovate and develop their maintenance processes. Since the contracts differ in between and there are changes in government policies over time that affects both existing and new contracts, a comparison between different contracts becomes challenging. A literature review has been conducted to understand the change in procurement strategy and how to encourage contractors to innovate. The research questions include: What procurement strategies are there? How is maintenance evaluated? How does procurement affect the innovation opportunities for entrepreneurs?

    The literature review focuses on railway maintenance and contract design between client and contractor. In total, 17 articles matched the search criteria and were selected for the review. To have successful maintenance service, five articles suggested partnering as a strategy with common goals in combination with good communication during the entirety of the contract. When selecting incentive plan, four articles mentions that a focus on performance-based incentives in combination with riskmanagement is better rather than actual payment schemes. The reason being that payment is often themain cause of conflicts between client and contractor. The scientific literature suggests that improvement in incentives improves quality of maintenance, decreases delays and technical failures. The conclusion from the literature review is that partnering in railway maintenance is considered successful. With accurate knowledge about railway assets the incentive plan becomes accurate which reduces costs.

    The literature review is a part of a research project with an overall goal to develop a model to guide the selection of appropriate type of procurement strategy, contract and control of maintenance for a moresustainable railway system.

  • 8.
    Backlund, Fredrik
    et al.
    Luleå University of Technology, Department of Business Administration, Technology and Social Sciences, Business Administration and Industrial Engineering.
    Holmberg, Rikard
    Vattenfall Vattenkraft.
    Söderholm, Peter
    Luleå University of Technology, Department of Civil, Environmental and Natural Resources Engineering, Operation, Maintenance and Acoustics.
    A 10 years journey introducing RCM within hydropower: a case study at Vattenfall Vattenkraft2008In: EuroMaintenance Papers: Conference and Trade Show on Asset Management & Production Reliability ; Brussels Expo, 8 - 10 April 2008, Belgian Maintenance Association , 2008, p. 21:1-21:10Conference paper (Refereed)
  • 9.
    Badland, Hannah
    et al.
    Auckland University of Technology, New Zealand.
    Oliver, Melody
    Auckland University of Technology, New Zealand.
    Duncan, Mitch
    Central Queensland University, Australia.
    Schantz, Peter
    Swedish School of Sport and Health Sciences, GIH, Department of Sport and Health Sciences, Åstrand Laboratory of Work Physiology, The Research Unit for Movement, Health and Environment.
    Measuring children´s independent mobility: Comparing objective and self-report approaches2011In: Children's Geographies, ISSN 1473-3285, E-ISSN 1473-3277, Vol. 9, no 2, p. 263-271Article in journal (Refereed)
  • 10.
    Bergquist, Bjarne
    et al.
    Luleå University of Technology, Department of Business Administration, Technology and Social Sciences, Business Administration and Industrial Engineering.
    Söderholm, Peter
    Trafikverket.
    Control charts for assessment of linear asset condition using both temporal and spatial information2012In: Proceedings of the 2nd International Workshop & Congress on eMaintenance: Dec 12-14 Luleå, Sweden : eMaintenace: trends in technologies and methodologies, challenges, possibilities and applications / [ed] Ramin Karim; Aditya Parida; Uday Kumar, Luleå: Luleå tekniska universitet, 2012, p. 145-152Conference paper (Refereed)
  • 11.
    Bergquist, Bjarne
    et al.
    Luleå University of Technology, Department of Business Administration, Technology and Social Sciences, Business Administration and Industrial Engineering.
    Söderholm, Peter
    Luleå University of Technology, Department of Business Administration, Technology and Social Sciences, Business Administration and Industrial Engineering.
    Control Charts supporting Condition-Based Maintenance of Linear Railway Infrastructure Assets2015In: International Journal of COMADEM, ISSN 1363-7681, Vol. 18, no 2, p. 7-16Article in journal (Refereed)
    Abstract [en]

    This paper presents a control chart approach for monitoring, diagnostics and prognostics to support condition-based maintenance (CBM) using condition data of linear railway infrastructure assets. The condition data were obtained from regular inspections done by a railway track measurement wagon. The condition data were statistically analysed by using two different control charts to evaluate the possibility for earlier detection of derailment hazardous faults using both temporal and spatial information.The study indicates that that the proposed control chart approach can be used for condition assessment of track and thereby provides valuable decision support for CBM. The control chart for condition information in the temporal domain supports diagnostics, while the control chart for condition information in the spatiotemporal domain also supports prognostics. The two proposed control charts give earlier fault warnings compared to the traditional approach. This facilitates decisions regarding CBM actions with an extended planning horizon and gives the possibility to increase the operational availability of track.

  • 12.
    Bergquist, Bjarne
    et al.
    Luleå University of Technology, Department of Business Administration, Technology and Social Sciences, Business Administration and Industrial Engineering.
    Söderholm, Peter
    Trafikverket.
    Control Charts supporting Condition-Based Maintenance of Linear Railway Infrastructure Assets2014In: Proceedings of the 3rd international workshop and congress on eMaintenance: June 17-18 Luleå, Sweden : eMaintenance, Trends in technologies & methodologies, challenges, possibilites and applications / [ed] Uday Kumar; Ramin Karim; Aditya Parida; Philip Tretten, Luleå: Luleå tekniska universitet, 2014, p. 101-107Conference paper (Refereed)
    Abstract [en]

    This paper presents a control chart approach for monitoring,diagnostics and prognostics to support condition-basedmaintenance (CBM) using condition data of linear railwayinfrastructure assets. The condition data were obtained fromregular inspections done by a railway track measurement wagon.The condition data were statistically analysed by using twodifferent control charts to evaluate the possibility for earlierdetection of derailment hazardous faults using both temporal andspatial information. The study indicates that that the proposedcontrol chart approach can be used for condition assessment oftrack and thereby provide valuable decision support for CBM. Thecontrol chart for condition information in the temporal domainsupports diagnostics, while the control chart for conditioninformation in the spatiotemporal domain also supportsprognostics. The two proposed control charts give earlier faultwarnings compared to the traditional approach. This facilitatesdecisions regarding CBM actions with an extended planninghorizon and gives the possibility to increase the operationalavailability of track.

  • 13.
    Bergquist, Bjarne
    et al.
    Luleå University of Technology, Department of Business Administration, Technology and Social Sciences, Business Administration and Industrial Engineering.
    Söderholm, Peter
    Luleå University of Technology, Department of Business Administration, Technology and Social Sciences, Business Administration and Industrial Engineering.
    Data Analysis for Condition-Based Railway Infrastructure Maintenance2015In: Quality and Reliability Engineering International, ISSN 0748-8017, E-ISSN 1099-1638, Vol. 31, no 5, p. 773-781Article in journal (Refereed)
    Abstract [en]

    Condition assessment is crucial to optimize condition-based maintenance actions of assets such as railway infrastructure, where a faulty state might have severe consequences. Hence, railways are regularly inspected to detect failure events and prevent the inspected item (e.g. rail) to reach a faulty state with potentially safety critical consequences (e.g. derailment). However, the preventive measures (e.g. condition-based maintenance) initiated by the inspection results may cause traffic disturbances, especially if the expected time to a faulty state is short. The alarm limits are traditionally safety related and often based on geometrical properties of the inspected item. Maintenance limits would reduce the level of emergency, producing earlier alarms and increasing possibilities of planned preventive rather than acute maintenance. However, selecting these earlier maintenance limits in a systematic way while balancing the risk of undetected safety-critical faults and false alarms is challenging. Here, we propose a statistically based approach using condition data of linear railway infrastructure assets. The data were obtained from regular inspections done by a railway track measurement wagon. The condition data were analysed by a control chart approach to evaluate the possibility for earlier detection of derailment hazardous faults using both temporal and spatial information. The study indicates that that the proposed approach could be used for condition assessment of tracks. Control charts led to earlier fault warnings compared to the traditional approach, facilitating planned condition-based maintenance actions and thereby a reduction of track downtime

  • 14.
    Bergquist, Bjarne
    et al.
    Luleå University of Technology, Department of Business Administration, Technology and Social Sciences, Business Administration and Industrial Engineering.
    Söderholm, Peter
    Luleå University of Technology, Department of Business Administration, Technology and Social Sciences, Business Administration and Industrial Engineering.
    Improved Condition Assessment through Statistical Analyses: Case Study of Railway Track2017Report (Other academic)
    Abstract [en]

    Traditional practice within railway maintenance is based on engineering knowledge and practical experience, which are documented in regulations. This practice is often time-based, but can also be condition-based by combining time-based inspections with condition-based actions depending on the inspection results. However, the logic behind the resulting regulation is seldom well documented, which makes it challenging to optimise maintenance based on factors such as operational conditions or new technologies, methodologies and best practices. One way to deal with this challenge is to use statistical analysis and build models that support fault diagnostics and failure prognostics. This analysis approach will increase in importance as automated inspections replace manual inspections. Specific measurement equipment and trains are not the only ones producing automated measurements; regular traffic is increasingly often producing measurements. Hence, there will not be any lack of condition data, but the challenge will be to use this data in a correct way and to extract reliable information as decision support. In this context, it is crucial to balance the risks of false alarms and unrecognised faults, but also to estimate the quality of both data and information. The purpose of this work is to use statistics in order to support improved asset management, by building statistical models as a complement to physical models and engineering knowledge. The resulting models combine theories from the field of time-series analysis, statistical process control (SPC) and measurement system analysis. Charts and plots present results and have prognostic capabilities that allow necessary track possession times to be included in the timetable. 

  • 15.
    Bergquist, Bjarne
    et al.
    Luleå University of Technology, Department of Business Administration, Technology and Social Sciences, Business Administration and Industrial Engineering.
    Söderholm, Peter
    Luleå University of Technology, Department of Business Administration, Technology and Social Sciences, Business Administration and Industrial Engineering.
    Measurement System Analysis of Railway Track Geometry Data using Secondary Data2016Conference paper (Refereed)
    Abstract [en]

    In this paper, we use secondary data to make a partial measurement system analysis of railway measurement cars and their obtained track geometry data. When a measurement car passes the same track section shortly after the previous passage, such as returning in the other direction after reaching a railway endpoint, the repeated measurements hold information of the measurement uncertainty of that car. Reasons for the measurement uncertainty can be sought in other variables that also are stored in the database, such as the individual car identity, the type of car, the speed of the car during measurement, and the travelled direction of the car. By also considering other known factors during the time of measurement as regressors, such as ground frost periods, enhanced modelling may be achieved and also indicate if such periods should be avoided to improve the measurement data quality.The results of this study suggest that the type of car had the largest influence on measurement variation out of the studied regressors. If the variation of a track geometry property on a track section is studied, the variation component belonging to the type of car can be deducted, improving data quality. We suggest that the method could also be used to find track sections that are prone to large seasonal variation, such as due to ground frost.

  • 16.
    Bergquist, Bjarne
    et al.
    Luleå University of Technology, Department of Business Administration, Technology and Social Sciences, Business Administration and Industrial Engineering.
    Söderholm, Peter
    Luleå University of Technology, Department of Business Administration, Technology and Social Sciences, Business Administration and Industrial Engineering.
    Measurement Systems Analysis of Railway Measurement Cars2016Conference paper (Refereed)
    Abstract [en]

    Purpose: The presentation proposes ways to understand and quantify the variation component due to the measurement system of railway track properties using subsequent runs from measurement cars.Background: Railway infrastructure conditions are commonly inspected by using measurement cars. The measurements are performed with some regularity, and the inspection frequencies could for instance be set taking into account the common train axle loads, railway speed or load bearing classification, number of trains passing, the known railway condition, or the availability of the measurement cars. By combining different inspections of the same track section, it is also possible to monitor the degradation of the infrastructure over time. Often, the railway system is inspected by many measurement cars, and for single tracks, measurements can be obtained from the car travelling in different directions. The measurements are performed at different speeds, related to random variation, but also to the maximum speeds at which the measurement cars operate. The measurements are also afflicted by external variation sources, some of which are acting with a known direction, such as the wear of the track which increases property variation. Maintenance usually (but not always) result in reduced property variation, whereas other sources such as climate related properties such as spring thaw may induce variation over time, but also induce variation that show a periodic behavior with periods with increasing as well as decreasing property variation. This presentation aims to devise a model for how these variation sources may be separated, with the main aim to classify measurement error, but also to estimate the magnitude of other variation sources.Method: No statistically significant differences were found between repeated measurements of cars travelling back and forth on the single track found at the Swedish Iron ore line. These measurements contain measurement error as well as error due to short term degradation and variation due to measurement. As measurement variance is added, it was concluded that the measurement variation could not be larger than the variation shown by repeat measurements. By comparing repeated measurements over time and subtracting variation due to wear, measurement variation for different cars, measurement speeds and measurement directions was estimated using Generalized Linear Models regression analysis. Co-variation between measurement cars and measurement speeds were accounted for using Ridge regression and Elastic Net regression.Results: The regression analysis shows that whereas both measurement speed and the measurement car individuals correlate with the measurement variation obtained, regularized regression points to the measurement cars as the major variation factor and that different measurement cars have different measurement precisionDiscussion and conclusion: The study demonstrates how repeated measurements from regular process data and thus not obtained using the regular and systematic experimental procedures of measurement system analysis can be used for estimation of the variation components of the measurement system. As a side effect, the sizes of other variation sources, external to the measurement system, can be estimated.

  • 17.
    Bergquist, Bjarne
    et al.
    Luleå University of Technology, Department of Business Administration, Technology and Social Sciences, Business Administration and Industrial Engineering.
    Söderholm, Peter
    Luleå University of Technology, Department of Business Administration, Technology and Social Sciences, Business Administration and Industrial Engineering.
    Predictive Modelling for Estimation of Railway Track Degradation2016In: Current Trends in Reliability, Availability, Maintainability and Safety: An Industry Perspective / [ed] Uday Kumar; Alireza Ahmadu; Ajit Kumar Verma; Prabhakar Varde, Encyclopedia of Global Archaeology/Springer Verlag, 2016, p. 331-347Conference paper (Refereed)
    Abstract [en]

    The degradation processes affecting railway track condition depends both on the resistance of the track and on the stresses subjected to it. Regarding the stresses, both their magnitudes and cycles are of importance when considering the degradation. Furthermore, the stresses have some regularity and variability in the time domain, while the degradation resistance of a track has some spatial regularity as well as variability. In addition, the condition measurements of track may be both irregular and contain measurement errors. Hence, it is challenging to model the condition of track to enable predictions and condition-based maintenance. However, wear prediction models could help to change large parts of the maintenance practice from predominantly corrective to preventive if both the deterministic and the stochastic components of the wear process can be estimated with sufficient accuracy. In this study, one-step-ahead predictions have been used for establishing prognostic models based on repeated measurements of railway track geometry to estimate track wear properties, degradation rates and stochastic behaviour including measurement errors. The prognostic models have then been used for condition assessment and state predictions. Repeated sampling allows for estimations of measurement errors, but the irregular sampling need to be accounted for by interpolation in the time series modelling approach

  • 18.
    Bergquist, Bjarne
    et al.
    Luleå University of Technology, Department of Business Administration, Technology and Social Sciences, Business Administration and Industrial Engineering.
    Söderholm, Peter
    Luleå University of Technology, Department of Business Administration, Technology and Social Sciences, Business Administration and Industrial Engineering.
    Projekt: Förbättrad tillståndsbedömning genom statistisk analys2015Other (Other (popular science, discussion, etc.))
  • 19.
    Bergquist, Bjarne
    et al.
    Luleå University of Technology, Department of Business Administration, Technology and Social Sciences, Business Administration and Industrial Engineering.
    Söderholm, Peter
    Luleå University of Technology, Department of Business Administration, Technology and Social Sciences, Business Administration and Industrial Engineering.
    Eriksson, Per-Erik
    Luleå University of Technology, Department of Business Administration, Technology and Social Sciences, Innovation and Design.
    Karrbom Gustavsson, Tina
    Arkitektur och samhällsbyggnad, KTH, Sverige.
    Projekt: Offentlig upphandling av järnvägsunderhåll2015Other (Other (popular science, discussion, etc.))
  • 20. Bergström, Ylva
    et al.
    Schantz, Peter
    Swedish School of Sport and Health Sciences, GIH, Department of Sport and Health Sciences, The Research Unit for Movement, Health and Environment.
    Brunnsvikenguiden1992In: Hagabladet - en tidning för natur och kultur vid Haga-Brunnsviken, no 4-5, p. 3-8Article in journal (Other (popular science, discussion, etc.))
  • 21.
    Block, J.
    et al.
    Saab Aerotech, Linköping.
    Söderholm, Peter
    Luleå University of Technology, Department of Civil, Environmental and Natural Resources Engineering, Operation, Maintenance and Acoustics.
    Tyrberg, T.
    Saab Aerotech, Linköping.
    Evaluation of preventive maintenance task intervals using field data from a complete life cycle2008In: IEEE Aerospace Conference Proceedings: -8 March 2008 : [Big Sky, Montana]., Piscataway, N.J: IEEE Communications Society, 2008, Vol. Article number 4526635, p. 1-11Conference paper (Refereed)
    Abstract [en]

    In this paper the appropriateness of initial preventive maintenance task intervals and the improvement of changed intervals are evaluated. The evaluation criteria are partly derived from logic found in the RCM (Reliability-Centered Maintenance) methodology. Empirical data is related to the whole life cycle of the Swedish military aircraft system FPL 37 Viggen, from 1977 to 2006. The analysis shows that the maintenance intervals are partly appropriate and that some performed changes are improvements. These conclusions are strengthened if the phase-out of the aircraft system is considered, where the preventive maintenance strategy has been replaced with a corrective one, in order to achieve cost-effectiveness. Considering the perfect repair assumption, it seems that the overhaul tasks essentially bring the items back to a state as good as new. The performed evaluation mostly considers when the failures are recognized, i.e. during operation or during maintenance. Hence, aspects such as item accessibility, personnel skill levels, and maintenance task intervals for other items are not included in the evaluation.

  • 22.
    Block, Jan
    et al.
    Luleå University of Technology, Department of Civil, Environmental and Natural Resources Engineering, Operation, Maintenance and Acoustics.
    Ahmadi, Alireza
    Luleå University of Technology, Department of Civil, Environmental and Natural Resources Engineering, Operation, Maintenance and Acoustics.
    Tyrberg, Tommy
    Logistics Analysis and Fleet Monitoring, Saab Support and Services, Linköping.
    Söderholm, Peter
    Luleå University of Technology, Department of Business Administration, Technology and Social Sciences, Business Administration and Industrial Engineering.
    Part-out-based spares provisioning management: A military aviation maintenance case study2014In: Journal of Quality in Maintenance Engineering, ISSN 1355-2511, E-ISSN 1758-7832, Vol. 20, no 1, p. 76-95Article in journal (Refereed)
    Abstract [en]

    Purpose – The purpose of this paper is to present the prerequisites for a part-out-based spares provisioning (PBSP) programme during the phase-out of an aircraft fleet. Furthermore, associated key decision criteria are identified and a framework for the phase-out management process is presented. Design/methodology/approach – Once a decision has been taken to phase-out an aircraft fleet, a number of routines for operations, maintenance and storage are affected and new tasks and functions must be introduced before initiating the actual parting-out process. A decision-making system and a management framework is needed to manage spares planning during the end-of-life phase to ensure availability at minimum cost and to ensure a manageable risk of backorders. Findings – For PBSP programme during the phase-out of an aircraft fleet to succeed and be cost-effective, a number of linked processes, tasks and decisions are required, e.g., those included in the framework proposed in this paper (see Figure 3). A successful implementation of PBSP also requires that these processes and tasks are carried out in a timely manner and that the communications between the concerned parties are prompt, clear and direct. One experience from the studied case is that close and trustful contacts and cooperation between the operator and maintenance provider(s) will greatly facilitate the process. Originality/value – Although the PBSP method is fairly commonly applied within both the military and the civilian sector, somewhat surprisingly very literature has been published on the subject. Indeed, remarkably little has been published on any aspects of maintenance during the end-of-life period.

  • 23. Block, Jan
    et al.
    Söderholm, Peter
    Luleå University of Technology, Department of Civil, Environmental and Natural Resources Engineering, Operation, Maintenance and Acoustics.
    Tyrberg, Tommy
    Saab Aerotech.
    Changes in items' failure pattern during maintenance: an investigation of the perfect repair assumption2008In: Annual Reliability and Maintainability Symposium, 2008: RAMS 2008 ; Las Vegas, Nevada, USA, 2008, 28 - 31 Jan, Piscataway, NJ: IEEE Communications Society, 2008, p. 117-122Conference paper (Refereed)
    Abstract [en]

    It is clear that the simple ‘perfect repair' assumption is not immediately applicable to any of the studied types of hardware, i.e. Cooling Turbine, High-Voltage Generator, Hydraulic Accumulator, and Radar Transmitter. Hence, the assumption of ‘perfect repair' needs to be validated for each specific type of item. Assumptions based on the type of physical hardware (e.g. mechanical item or avionics item) are not always trustworthy.Strangely enough the ‘perfect repair' assumption fits best for the Cooling Turbine, which is a highly stressed mechanical item, while the fit is much poorer for the Radar Transmitter, which is an avionics item and for the Hydraulic Accumulator.For the Radar Transmitter the trend seems to be very scattered. For items with a large number of failures early in their life-cycle, repair is ‘better than perfect', i.e. the items become more reliable after repair, presumably by elimination of less reliable subcomponents. However, this effect is not seen for items with few failures early in their life-cycle. For these items ‘perfect repair' initially seems to be a valid model. However, in many cases repair becomes ‘less than perfect' later in the life-cycle. For the Hydraulic Accumulator this trend is even more accentuated and individual items seem to fall into two distinct subpopulations with opposite reliability trends.

  • 24.
    Block, Jan
    et al.
    Luleå University of Technology, Department of Civil, Environmental and Natural Resources Engineering, Operation, Maintenance and Acoustics.
    Tyrberg, T.
    Saab Aerotech.
    Söderholm, Peter
    Luleå University of Technology, Department of Civil, Environmental and Natural Resources Engineering, Operation, Maintenance and Acoustics.
    No Fault Found events during the operational life of military aircraft items2009In: 8th International Conference on Reliability, Maintainability and Safety, 2009: ICRMS 2009 ; 20 - 24 July 2009, Chengdu, China / [ed] Rui Kang, Piscataway, NJ: IEEE Communications Society, 2009, p. 920-924Conference paper (Refereed)
    Abstract [en]

    No fault found (NFF) events are critical and well-known problems for certain aircraft items. This paper presents a study of these events for repairable items with on-condition maintenance, based on operational data from a military aircraft. Some findings are that: the number of NFF events is influenced by item type and number of repairs; most NFF events are initiated by faults recognized during operation; and different inspections contribute to NFF events. Hence, item design and tests at different operational modes and maintenance echelons should be better aligned to reduce the number of NFF events

  • 25.
    Blomstrand, Eva
    et al.
    Swedish School of Sport and Health Sciences, GIH, Department of Sport and Health Sciences, Åstrand Laboratory of Work Physiology, Eva Blomstrand's research group.
    Ekblom, Björn
    Swedish School of Sport and Health Sciences, GIH, Department of Sport and Health Sciences, Åstrand Laboratory of Work Physiology, Björn Ekblom's research group.
    Hedman, Rune
    Schantz, Peter
    Swedish School of Sport and Health Sciences, GIH, Department of Sport and Health Sciences, Åstrand Laboratory of Work Physiology, The Research Unit for Movement, Health and Environment.
    Irma Åstrand: Nekrolog2016Other (Other (popular science, discussion, etc.))
  • 26.
    Blomstrand, Eva
    et al.
    Swedish School of Sport and Health Sciences, GIH, Department of Sport and Health Sciences, Åstrand Laboratory of Work Physiology, Eva Blomstrand's research group.
    Schantz, Peter
    Swedish School of Sport and Health Sciences, GIH, Department of Sport and Health Sciences, Åstrand Laboratory of Work Physiology, The Research Unit for Movement, Health and Environment.
    Berit Sjöberg: 1939-20182019Other (Other (popular science, discussion, etc.))
  • 27. Blücher, Gösta
    et al.
    Edmar, Désirée
    Schantz, Peter
    Swedish School of Sport and Health Sciences, GIH, Department of Sport and Health Sciences, Åstrand Laboratory of Work Physiology, The Research Unit for Movement, Health and Environment.
    Eva Nordenson: nekrolog2014Other (Other (popular science, discussion, etc.))
  • 28.
    Boushel, Robert
    et al.
    Swedish School of Sport and Health Sciences, GIH, Department of Sport and Health Sciences, Åstrand Laboratory of Work Physiology.
    Schantz, Peter
    Swedish School of Sport and Health Sciences, GIH, Department of Sport and Health Sciences, Åstrand Laboratory of Work Physiology, The Research Unit for Movement, Health and Environment.
    Bengt Saltin: Nekrolog2014Other (Other (popular science, discussion, etc.))
    Abstract [sv]

    Bengt Saltin

    Professor Bengt Saltin, Stockholm, har avlidit i en ålder av 79 år. Hans närmast sörjande är Ann-Sofi Colling-Saltin med barnen Ola, Åsa, och Anna med familjer.  

    Bengt Saltin föddes i Ålsten den 3 juni 1935. Han växte upp med modern Margareta och sin sociale far, Sven Saltin, som båda var folkskolelärare. Under läroverkstiden i Södertälje fångade stadens apotekare upp vinnaren vid en terränglöpning och bjöd in honom till en orienteringskurs. Ett livslångt intresse skapades. De bästa ämnena i skolan, svenska språket och svensk litteratur, representerade ett annan viktig ådra. Men det skogliga lockade mest; han ville bli jägmästare. Modern sa dock nej; ”Du ska bli läkare!” Så blev det. Under studier vid Karolinska Institutet rekryterade fysiologen Ulf von Euler honom som amanuens. Bengt nämnde sitt intresse för idrott, varvid han introducerades för professor Erik Hohwü Christensen vid Kungl. Gymnastiska Centralinstitutet.

    Sommaren 1959 inleddes skolningen till arbetsfysiolog. Det första arbetet handlade om det intermittenta arbetets fysiologi, publicerades 1960, och bidrog till intervallträningens utveckling. Det blev tidigt uppenbart att Bengt hade en ovanlig talang för forskning. Efter en centralcirkulatorisk avhandling 1964, med Hohwü Christensen och Per-Olof Åstrand som handledare, visade han även prov på stor självständighet genom att utveckla en ny forskningslinje om skelettmuskulaturen. Den blev snart världsledande. Från 1973 fortsatte Bengt sin bana som professor vid Köpenhamns universitet. Med ett kort undantag vid Karolinska Institutet, förblev Köpenhamn basen för hans gärning. De sista knappa 20 åren ledde han Copenhagen Muscle Research Centre, vars forskning redan är inskriven i vetenskapshistoriska läroböcker.

    Bengt hade en enorm arbetskapacitet, publicerade mer än 440 arbeten, och handledde drygt 40-50 doktorander. Han blev ledamot av Danmarks Kungliga Vetenskapsakademi, hedersdoktor vid tolv universitet, och fick Internationella Olympiska Kommitténs vetenskapliga pris, det finaste man kan få inom det rörelsevetenskapliga fältet. Men för att rätt förstå hans storhet bör man även ha mött honom som den oerhört stimulerande, generösa och stöttande människa han var, och fått ta del av de skarpa samhällsanalyserna samt utblickarna inom litteraturens, teaterns, operans och dansens världar. Han var beundrad av studenter över hela världen för den människa han var, för det arbete han utförde och för det han inspirerade till. Vi sörjer förlusten av en av de riktigt stora inom det arbetsfysiologiska fältet, och en ovanligt klok och vidsynt människa. 

     

    För vänner och kolleger

    Robert Boushel, professor

    Peter Schantz, professor

  • 29.
    Candell, Olov
    et al.
    Luleå University of Technology, Department of Civil, Environmental and Natural Resources Engineering, Operation, Maintenance and Acoustics.
    Karim, Ramin
    Luleå University of Technology, Department of Civil, Environmental and Natural Resources Engineering, Operation, Maintenance and Acoustics.
    Söderholm, Peter
    eMaintenance - information logistics for maintenance support2009In: Robotics and Computer-Integrated Manufacturing, ISSN 0736-5845, E-ISSN 1879-2537, Vol. 25, no 6, p. 937-944Article in journal (Refereed)
    Abstract [en]

    Today‟s providers of maintenance and in-service support related to modern aircraft are facing major challenges. A central problem with Maintenance, Repair and Overhaul (MRO) as well as support of aircraft and other complex technical systems, is to manage the ever-increasing information flow and system complexity. Both military and commercial operators need to reduce aircraft downtime and maintenance man hours. Increased manual information management has the opposite effect, inducing unnecessary cost and affect efficiency negatively. Organisations developing and providing maintenance support products and in-service support does also need to improve the capability to efficiently exploit the increasing amount of digital product information and design data provided together with hardware (HW) and software (SW) products from aircraft manufacturers, sub-system suppliers and Original Equipment Manufacturers (OEM). One way to increase aircraft availability and improve maintenance and support efficiency, is to speed up the turnaround time for scheduled and unscheduled maintenance. The ultimate goal is risk-based utilisation and support, where true Condition-Based Maintenance (CBM) is integrated with current operational requirements and available resources in real-time. This aims at the elimination of all preventive scheduled maintenance based on fixed time intervals and execution of only corrective maintenance that has been predicted and turned into scheduled maintenance facilitated by proper support. To address the challenge of information logistics of digital product data and information within maintenance in-service support, providers need to adapt new methodologies and tools that enable full utilisation of the advantages of digital product data and information in processes and business models, e.g. Service-Oriented Architecture (SOA). In order to implement such improved support solutions in a global support environment, eMaintenance is seen as one important building block. eMaintenance includes monitoring, collection, recording and distribution of real-time system health data, maintenance generated data as well as other decision and performance support information to different stakeholders independent of organization or geographical location, 24 hours a day, 7 days a week (24/7). eMaintenance has the potential to improve the management and performance of activities related to the whole maintenance process, and thereby improve the dependability, safety and Life Cycle Cost (LCC) of critical systems. This can be realized through a coordinated application of Information & Communication Technology (ICT) throughout the maintenance and support processes, thus integrating Built-in Test (BIT) systems, external tests at different maintenance echelons, technical information, diagnostics, prognostics and other sources of support information. The purpose of this paper is to present some results from a joint academic and aerospace industry research project, describing requirements and expectations that are important in a global support environment, and also to propose some central components in an eMaintenance framework that integrates maintenance and ICT perspectives.

  • 30.
    Candell, Olov
    et al.
    Saab Aerotech, Linköping.
    Karim, Ramin
    Luleå University of Technology, Department of Civil, Environmental and Natural Resources Engineering, Operation, Maintenance and Acoustics.
    Söderholm, Peter
    Luleå University of Technology, Department of Business Administration, Technology and Social Sciences, Business Administration and Industrial Engineering.
    Kumar, Uday
    Luleå University of Technology, Department of Civil, Environmental and Natural Resources Engineering, Operation, Maintenance and Acoustics.
    Server-oriented information logistics as support to intelligent transport services2010In: 16th World Congress and Exhibition on Intelligent Transport Systems 2009: 16th ITS World Congress ; Stockholm, Sweden, 21 - 25 September 2009, Curran Associates, Inc., 2010Conference paper (Refereed)
    Abstract [en]

    Today‟s society is dependent on an increasing volume of transportation services, which contributes to escalating requirements on economy, dependability, safety, and sustainability of applied transportation systems. When dealing with complex transportation systems with long life cycles, maintenance is fundamental to ensure these critical requirements. The increasing requirements and the technological development have also lead to the emerging approach of eMaintenance, which applies innovative Information & Communication Technology (ICT) to achieve effective information logistics for maintenance purposes. This paper describes the role and development of service-oriented eMaintenance solutions to enable intelligent transportation services and some related research efforts within railway and aviation.

  • 31.
    Candell, Olov
    et al.
    Luleå University of Technology, Department of Civil, Environmental and Natural Resources Engineering, Operation, Maintenance and Acoustics.
    Söderholm, Peter
    Luleå University of Technology, Department of Civil, Environmental and Natural Resources Engineering, Operation, Maintenance and Acoustics.
    A customer and product support perspective of e-maintenance2006In: Condition Monitoring and Diagnostic Engineering Management: COMADEM 2006 ; proceedings of the 19th international congress, Luleå, Sweden, 12 - 15 June 2006 / [ed] Uday Kumar, Luleå: Luleå tekniska universitet, 2006, p. 243-252Conference paper (Refereed)
    Abstract [en]

    Today the providers of customer and product support related to military aircraft are facing major challenges. Traditionally, aircraft systems have stringent requirements on safety. In addition to this, the requirements on dependability, costs, and security have increased in importance. These changes, together with an increased diversity of customer requirements in a global utilization environment, add to the complexity of providing appropriate support solutions. The increased customer requirements have also lead to concepts such as total solution selling, or functional products, where the customers are offered availability performance to a fixed price. In order to enable efficient support solutions in a global support environment, e-Maintenance is seen as one important building block. e-Maintenance includes monitoring, collection, and distribution of realtime system health data and information to all stakeholders independent of organizational belonging or geographical location, 24 hours a day, 7 days a week (24-7). The concept of e-Maintenance is realized through the application of Information & Communication Technology (ICT), which integrates built-in tests, external tests at different maintenance echelons, and other sources of support information. The purpose of this paper is to describe important requirements and expectations that a provider of customer and product support related to military aircraft systems has on e-Maintenance in a global support environment.

  • 32.
    Dang, Phung
    et al.
    Swedish School of Sport and Health Sciences, GIH, Department of Sport and Health Sciences, The Research Unit for Movement, Health and Environment.
    Lundvall, Suzanne
    Swedish School of Sport and Health Sciences, GIH, Department of Sport and Health Sciences.
    Engström, Lars-Magnus
    Swedish School of Sport and Health Sciences, GIH, Department of Sport and Health Sciences.
    Schantz, Peter
    Swedish School of Sport and Health Sciences, GIH, Department of Sport and Health Sciences, The Research Unit for Movement, Health and Environment.
    Tiden talar för fysiskt aktiv skolpendling2006In: Svensk Idrottsforskning: Organ för Centrum för Idrottsforskning, ISSN 1103-4629, no 3, p. 14-15Article in journal (Other academic)
  • 33. De Vries, Sjerp
    et al.
    Claßen, Thomas
    Eigenheer-Hug, Stella-Maria
    Korpela, Kalevi
    Maas, Jolanda
    Mitchell, Richard
    Schantz, Peter
    Swedish School of Sport and Health Sciences, GIH, Department of Sport and Health Sciences, Åstrand Laboratory of Work Physiology, The Research Unit for Movement, Health and Environment.
    Contributions of Natural Environments to Physical Activity: Theory and Evidence Base2011In: Forests, Trees and Human Health / [ed] Nilsson, K., Sangster, M., Gallis, C., Hartig, T., de Vries, S., Seeland, K.. & Schipperijn, J., Heidelberg: Springer Verlag , 2011, 1, p. 205-243Chapter in book (Other academic)
    Abstract [en]

    The link between modern lifestyles and increasing levels of chronic heart disease, obesity, stress and poor mental health is a concern across the world. The cost of dealing with these conditions places a large burden on national public health budgets so that policymakers are increasingly looking at prevention as a cost-effective alternative to medical treatment. Attention is turning towards interactions between the environment and lifestyles. Exploring the relationships between health, natural environments in general, and forests in particular, this groundbreaking book is the outcome of the European Union’s COST Action E39 ‘Forests, Trees and Human Health and Wellbeing’, and draws together work carried out over four years by scientists from 25 countries working in the fields of forestry, health, environment and social sciences. While the focus is primarily on health priorities defined within Europe, this volume explicitly draws also on research from North America and elsewhere and will have relevance worldwide. A state-of-the-art analysis of the global research on the topic of forests and human health, a key contribution of the book is its synthesis of material across both disciplines and nations, providing a vital reference for researchers in forestry, health, natural resource management and environmental policy. Currently the only unified body of work on this topic, the book will also be an important tool for those working in both health and environment policy and practice.

  • 34.
    Dittmer, Staffan
    et al.
    Swedish School of Sport and Health Sciences, GIH.
    Schantz, Peter
    Swedish School of Sport and Health Sciences, GIH.
    Forsberg, Artur
    Betydelsen av grennära styrketräning för längdskidåkare1980In: Svensk skidsport : organ för Svenska skidförbundet, ISSN 0049-2671, no 9, p. 21-23Article in journal (Other academic)
  • 35. Edmar, Désirée
    et al.
    Nyberg, Lars
    Johansson, Bengt O.H.
    Schantz, Peter
    Swedish School of Sport and Health Sciences, GIH, Department of Sport and Health Sciences.
    Sjöström, Ingrid
    Sture Koinberg: 1935-20182018Other (Other (popular science, discussion, etc.))
  • 36. Elm, Klas
    et al.
    Brynell Johansson, Gunilla
    Strömgren, Lars
    Larsson, Lovisa
    Schantz, Peter
    Swedish School of Sport and Health Sciences, GIH, Department of Sport and Health Sciences, Åstrand Laboratory of Work Physiology, The Research Unit for Movement, Health and Environment.
    Marjanovic, Arijana
    Oretorp, Henrik
    Forsberg, Bertil
    En ny nollvision som både räddar och förlänger liv2017In: Dagens Samhälle, ISSN 2002-5548, no 24 novemberArticle in journal (Other (popular science, discussion, etc.))
    Abstract [sv]

    Nollvisionen för trafiksäkerheten är cynisk. Infrastrukturminister Tomas Eneroth måste ta fram ett nytt mål bortom nollvisionen som inte bara förhindrar dödsolyckor i trafiken, utan som också räddar, förbättrar och förlänger liv i hela samhället. Ett transportsystem där folkhälsan går plus är möjligt nu när elcykelförsäljningen ökar dramatiskt, skriver forskare och initiativtagare till Moving Beyond Zero.

     

    Varje person som väljer att cykla istället för att ta bilen räddar liv. Minskad biltrafik leder till mindre avgasutsläpp och vägslitage. Det förbättrar livskvaliteten hos personer med andningsbesvär och gör att de globala klimatförändringarna som påverkar allas hälsa negativt minskar. Dessutom vet vi sedan länge att motion förbättrar hälsan.

    Sedan 20 år tillbaka styrs det svenska trafiksäkerhetsarbetet av målet att ingen ska dödas eller skadas allvarligt i trafiken. Inledningsvis var arbetet framgångsrikt och antalet omkomna i trafikolyckor minskade från omkring 540 per år till fjolårets 270. Varje dödsfall är ett för mycket, men i dag framstår nollvisionen som cynisk.

    Bilarnas trafiksäkerhet har under dessa år ökat på cyklisternas bekostnad. Nya vajerräcken är den vägåtgärd som i störst utsträckning bidragit till att minska olyckorna för bilister. Men det har gjort det omöjligt att cykla på vägen. Det är en förklaring till att cyklandet har minskat på landsbygden. Trafikverket slår sig för bröstet för att antalet dödade och skadade har minskat i en del av samhället när det samtidigt har inneburit att personer dör i en annan del.

    Trafikverkets översyn av Nollvisionen från 2016 beskriver hur olyckor för bilister ska förhindras. För cyklisterna ses olyckorna som “oundvikliga” och att skadorna ska lindras genom att cyklisterna ska sänka hastigheten samt bära fluorescerande kläder och skyddsutrustning. Krav på att cyklister ska skydda sig själva från farliga vägar och bilar riskerar att minska cyklandet.

    Detta är cyniskt, då det finns flera åtgärder som Trafikverket kan göra för att också förhindra cykelolyckor. Trafikverkets egna beräkningar visar att säkrare cykelinfrastruktur skulle leda till 78 färre allvarligt skadade cyklister per år.  Sänkt hastighet i tätbebyggt område och bättre vinterväghållning för cyklister skulle leda till 48 respektive 38 färre allvarligt skadade per år.

    Men istället för att satsa på det som skulle öka cyklingen och göra den säkrare har de senaste tjugo åren inneburit motsatsen. Nu gör elcykelpremien att försäljningen av elcyklar ökar dramatiskt och nyligen utsågs elcykeln till årets julklapp. Nu finns det möjligheter att tänka nytt i trafikpolitiken.

    Nyttorna med ökad aktiv mobilitet, såsom gång och cykling, är så mycket större än trafiksäkerhet. I jämförelse med olycksriskerna är hälsoeffekterna 20 gånger större. I Sverige dör varje år 1 500 personer på grund av luftföroreningar och vägdamm från trafiken, och flera 1000-tals personer dör varje år i förtid på grund av fysiskt inaktiv livsstil.

    Därför behöver Sverige en ny nollvision som räddar, förbättrar och förlänger liv istället för att så få som möjligt ska dödas eller skadas. Ett sådant mål kan bara nås genom att främja aktiv mobilitet. 

    Klas Elm

    Svensk Cykling

     

    Gunilla Brynell Johansson

    VD, Vätternrundan

     

    Lars Strömgren

    European Cyclists’ Federation

     

    Lovisa Larsson

    Trafiksäkerhetsrådet

     

    Peter Schantz

    Professor, Gymnastik- och idrottshögskolan (GIH)

     

    Arijana Marjanovic

    Cykelfrämjandet

     

    Henrik Oretorp

    Svenska Cykelstäder

     

    Bertil Forsberg

    Professor, Umeå Universitet

  • 37. Fernström, Erik
    Henriks, Anders
    Linder, Sven-Gunnar
    Pettersson, Gunnar
    Schantz, Peter
    Swedish School of Sport and Health Sciences, GIH, Department of Sport and Health Sciences, Åstrand Laboratory of Work Physiology, The Research Unit for Movement, Health and Environment.
    Fjällmarsch Trantre1979Other (Other (popular science, discussion, etc.))
    Abstract [sv]

    Under vintern 1978 genomfördes Fjällmarsch TranTre på skidor av de sex unga män som har skrivit denna dokumentation av skidturen. Den startade den 1 mars i Transtrand och fortsatte längs den svenska fjällkedjan upp till Treriksröset. Därefter färdades de söderut till tågstationen Torne träsk, som de kom till den 27 april. De hade då tillryggalagt en sträcka på 1500 km under 50 dagar.

    Texterna handlar om deltagarna, deras förberedelser, färdvägen, dagsetapperna, utrustningen, packningen, maten, lägerplatserna, fotvården, skidorna, vädret, solen, kylan, sömnen, samt djuren och naturen.  

    Det fysiska arbetet studerades vetenskapligt och gav upphov till fyra publikationer som anges nedan som olika poster i DiVA:

    • Schantz, Peter et al. 1982. Training-induced increase in myofibrillar ATPase intermediate fibers in human skeletal muscle. Muscle & Nerve 5:628-636.

    • Schantz, Peter et al. 1983. Adaptation of human skeletal muscle to endurance training of long duration. Clin. Physiol 3:141-151.

    • Schantz, Peter. 1986. Plasticity of human skeletal muscle - with special reference to effectsof physical training on enzyme levels of the NADH shuttles and phenotypicexpression of slow and fast isoforms of myofibrillar proteins, Acta Physiol Scand, vol 128, Suppl.558, pp 1-64. 

    • Schantz, Peter. 1980. Långtur - om 150 turåkning längs den svenska fjällkedjan. Stockholm: Trygg-Hansa.
  • 38. Fernström, Erik
    et al.
    Forsell, Claes
    Henriks, Anders
    Linder, Sven-Gunnar
    Petersson, Gunnar
    Schantz, Peter
    Swedish School of Sport and Health Sciences, GIH, Department of Sport and Health Sciences, Åstrand Laboratory of Work Physiology, The Research Unit for Movement, Health and Environment.
    Die Gebirgsexpedition Trantre1979Other (Other (popular science, discussion, etc.))
    Abstract [de]

    Im Winter 1978 wurde die Gebirgsexpedition „Fjällmarsch TranTre“ von sechs jungen Männern auf Skiern durchgeführt. Er begann am 1. März in Transtrand und ging entlang der schwedischen Bergkette bis nach Treriksröset. Dann reisten sie nach Süden zum Torne Träsk bahnhof, den sie am 27. April erreichten.

    Sie wanderten 50 Tage lang und legten eine Strecke von 1500 km zurück. Die jungen Männer dokumentierten ihre Skireise und die verfassten Texte handeln von ihren Vorbereitungen, der Reiseroute, den Etappen, der Ausrüstung, dem Gepäck, dem Essen, den Campingplätzen, der Fußpflege, den Skiern, dem Wetter, der Sonne, der Kälte, dem Schlaf sowie den Tieren und der Natur.

    Die körperliche Anstrengung wurde wissenschaftlich untersucht und führte zu vier Veröffentlichungen, die nachfolgend als verschiedene Einträge in digitales wissenschaftliches Archiv (DiVA) aufgeführt sind:

    • Schantz, Peter et al. 1982. Training-induced increase in myofibrillar ATPase intermediate fibers in human skeletal muscle. Muscle & Nerve 5:628-636.

    • Schantz, Peter et al. 1983. Adaptation of human skeletal muscle to endurance training of long duration. Clin. Physiol 3:141-151.

    • Schantz, Peter. 1986. Plasticity of human skeletal muscle - with special reference to effectsof physical training on enzyme levels of the NADH shuttles and phenotypicexpression of slow and fast isoforms of myofibrillar proteins, Acta Physiol Scand, vol 128, Suppl.558, pp 1-64. 

    • Schantz, Peter. 1980. Långtur - om 150 turåkning längs den svenska fjällkedjan. Stockholm: Trygg-Hansa.
  • 39.
    Forsberg, Artur
    et al.
    Swedish School of Sport and Health Sciences, GIH, Department of Sport and Health Sciences.
    Schantz, Peter
    Swedish School of Sport and Health Sciences, GIH, Department of Sport and Health Sciences.
    Styrkans betydelse vid längdåkning1979In: Svensk skidsport : organ för Svenska skidförbundet, ISSN 0049-2671, no 9, p. 21-24Article in journal (Other academic)
  • 40. Granström, Rikard
    et al.
    Söderholm, Peter
    Luleå University of Technology, Department of Civil, Environmental and Natural Resources Engineering, Operation, Maintenance and Acoustics.
    Condition monitoring of railway wheels and no fault found problems2009In: International Journal of COMADEM, ISSN 1363-7681, Vol. 12, no 2, p. 46-53Article in journal (Refereed)
    Abstract [en]

    Defective railway wheels can cause severe damages to both track and vehicle items, which in worst case can lead to derailments with extensive losses. Wheel impact detection systems are intended to support prevention of railway damages and its related losses, through recognition of wheel defects and generation of alarms. While commissioning of a wheel impact detection system in Sweden, it was revealed that the detection system was reliable as they were not generating any false alarms. However, during operation some of the system's alarms resulted in No Fault Found (NFF) events. Hence an investigation was launched to determine if the cause of the NFF events were false alarms generated by the detection system, or the inability of subsequent manual inspection to replicate the detection system's test result. This paper presents experiences from the verification study and links these to international experiences illustrating how wheel impact detection systems can support continuous assessment of wheel condition and related condition based maintenance efforts.

  • 41. Granström, Rikard
    et al.
    Söderholm, Peter
    Luleå University of Technology, Department of Civil, Environmental and Natural Resources Engineering, Operation, Maintenance and Acoustics.
    Punctuality measurements effect on the maintenance process: a study of train delay statistics for the Swedish railway2005In: Abstracts of the Eighth International Conference "Maintenance & Renewal of Permanent Way; Power & Signalling; Structures & Earthworks": Railway Engineering 2005 / [ed] M.C. Forde, Engineering Technics Press , 2005, p. 22-Conference paper (Other academic)
    Abstract [en]

    Governmental regulations state that the Swedish national railway administrator Banverket has an overall responsibility for train punctuality, independent of whether train delays are caused by Banverket or the train operating companies. Banverket is responsible for the functioning of the railway system as a whole, but can with own maintenance and reinvestment activities only affect the infrastructure. Conflicts derive from the two stakeholders' different roles and interests. In order to effectively forecast maintenance needs and costs of the infrastructure, Banverket want that the infrastructure's deterioration caused by the rolling stock should be both as small and as predictable as possible. However, the train operating companies look at the same situation from the other point of view, with a focus on their rolling stock. The interrelationship between the two stakeholder roles and their combined maintenance process is complex, since it is difficult to pinpoint the responsibility for the whole transport system and separate assets. One essential approach, in order to monitor low performance linked to responsible stakeholder roles and causes is to follow up the two measures punctuality and train delays. This paper explores the characteristics of existing train delay statistics and describes risks when maintenance efforts and design of incentives for improved railway operation is based on statistics that does not reflect the true root-causes of problems.

  • 42. Granström, Rikard
    et al.
    Söderholm, Peter
    Luleå University of Technology, Department of Civil, Environmental and Natural Resources Engineering, Operation, Maintenance and Acoustics.
    Verification and utilization of wheel impact detection systems2006In: Condition Monitoring and Diagnostic Engineering Management: COMADEM 2006 ; proceedings of the 19th international congress, Luleºa, Sweden, 12 - 15 June 2006 / [ed] Uday Kumar, Luleå: Luleå tekniska universitet, 2006, p. 667-676Conference paper (Refereed)
    Abstract [en]

    Defective rail wheels can cause severe damages to both track and vehicle components, which in worst case can lead to derailments with extensive losses. Wheel impact detection systems are intended to prevent railway damages and its related losses, through recognition of wheel defects and generation of alarms. At commissioning of a wheel impact detection system in Sweden, the commissioning study showed that the system was reliable, without generating any false alarms. However, during operation some of the system's alarms resulted in No Fault Found (NFF) events at subsequent manual inspections. Hence, a verification study was launched in order to determine if the cause of the NFF events were false alarms generated by the system, or the inability of subsequent manual inspection to replicate the system's test result. The verification study was expected to support an exclusion of the manual inspection, which was perceived to be the cause of the NFF events. However, an exclusion of the manual inspection would require the wheel impact detection system to be highly reliable, since it would be the primary foundation for decisions about both operation and maintenance. This study reports on vital experiences from the verification study and links these to experiences from other countries. The experiences highlight the importance of data accuracy and appropriate information management, in order to achieve the potential benefits and avoid the drawbacks of condition monitoring.

  • 43. Henriksson, Jan
    et al.
    Rosdahl, Hans
    Swedish School of Sport and Health Sciences, GIH.
    Schantz, Peter
    Swedish School of Sport and Health Sciences, GIH, Department of Sport and Health Sciences, Åstrand Laboratory of Work Physiology, The Research Unit for Movement, Health and Environment.
    Wallberg, Harriet
    Per-Olof Åstrand: Nekrolog2015Other (Other (popular science, discussion, etc.))
    Abstract [sv]

    Nekrolog över Per-Olof Åstrand

    Professor emeritus Per-Olof Åstrand har avlidit i en ålder av 92 år. Hans närmaste anhöriga är makan Irma och barnen Elin och Per med familjer.

    Per-Olof Åstrand föddes i Bredaryd i Småland den 21 oktober 1922, och avled den 2 januari 2015 i Näsby Park norr om Stockholm. Efter värnplikt och beredskapstjänstgöring i pansartrupperna under andra världskriget kom han 1944 till Kungl. Gymnastiska Centralinstitutet (GCI/GIH) för studier till gymnastiklärare. Vid sluttentamen i fysiologi var hans svar så avancerade att den ansvarige läraren bad professorn, Erik Hohwü Christensen, att rätta dem. Kort därefter fick GCI:s fysiologiska institution en ny amanuens.

    Efter gymnastikdirektörsexamen 1946 följde läkarstudier, och parallellt med dessa inleddes avhandlingsarbetet  ”Experimental studies of physical working capacity in relation to sex and age”, som försvarades 1952. Genom detta utvecklades en metodik för att mäta maximal syreupptagning. Det blev en avgörande variabel att relatera till i hans senare forskning om den cirkulatoriska och respiratoriska anpassningen till fysiskt arbete och träning. Det submaximala konditionstest som P.-O., och hans blivande hustru Irma Ryhming, publicerade år 1954 bidrog till att göra GCI känt över världen. Det finns fog att benämna honom som ”den vetenskapligt baserade konditionsträningens fader”. 1970 blev han professor i kroppsövningarnas fysiologi vid GIH.

    P.-O. visade tidigt ett stort intresse för undervisning, och många mötte honom i populärvetenskapliga skrifter såsom ”Kondition och hälsa” och ”Bättre kondition”, men det var genom den omfattande läroboken ”Textbook of Work Physiology: Physiological Bases for Exercise”, skriven tillsammans med Kaare Rodahl, som han blev det riktigt stora namnet inom internationell arbetsfysiologi. Där framträdde holisten Åstrand med en bredd och ett djup som ingen förr hade fångat och skrivit fram. Denna bok, P.-O:s pedagogiska förmåga och engagemang har haft avgörande betydelse för många studenter och kolleger.

    Hans gärningar gjorde honom till ledamot i många lärda sällskap och hedersdoktor vid ett antal universitet ute i världen. Därtill var han en hedersman, med en personlighet präglad av en stor omtanke, slagkraftig humor och generös spiritualitet, ofta med inslag av en särpräglad musikalisk förmåga. För oss som studenter och lärare vid GIH kom samvaron med P.-O. ofta att formas till högtidsstunder. En legendar har nu lämnat oss i djupaste sorg, men också i tacksamhet över allt han bidrog med i våra liv.

    Jan Henriksson

    Hans Rosdahl

    Peter Schantz

    Harriet Wallberg

  • 44. Holm, Lennart
    et al.
    Schantz, Peter
    Swedish School of Sport and Health Sciences, GIH, Department of Sport and Health Sciences, Åstrand Laboratory of Work Physiology, The Research Unit for Movement, Health and Environment.
    Inledning2002In: Nationalstadsparken – ett experiment i hållbar utveckling: Studier av värdefrågor, lagtillämpning och utvecklingslinjer. / [ed] Holm, Lennart & Schantz, Peter, Stockholm: Forskningsrådet Formas, 2002, p. 9-20Chapter in book (Other academic)
  • 45. Holm, Lennart
    et al.
    Schantz, PeterSwedish School of Sport and Health Sciences, GIH, Department of Sport and Health Sciences, Åstrand Laboratory of Work Physiology, The Research Unit for Movement, Health and Environment.
    Nationalstadsparken: ett experiment i hållbar utveckling: studier av värdefrågor, lagtillämpning och utvecklingslinjer2002Collection (editor) (Other academic)
    Abstract [sv]

    Det historiska landskapet Ulriksdal-Haga-Brunnsviken-Djurgården är Sveriges äldsta och mest besökta tätortsnära frilufts- och rekreationsområde. Det ligger mitt i Stor-Stockholm vid gränsen mellan skärgården och Mälardalen, är rikt på kulturella minnen och har en intressant biologisk mångfald.

    Närheten till storstaden gör detta landskap lätt tillgängligt för allmänheten. Men närheten gör det också attraktivt för olika slag av exploateringar. 1995 fick området därför skydd som Sveriges första nationalstadspark genom ett enhälligt beslut i riksdagen.

    Syftet med lagstiftningen är att förstärka områdets natur-, kultur- och rekreationsvärden samt att värna den biologiska mångfalden. Och regeringen menade att dess förslag kunde förväntas "medföra en stor samhällsekonomisk vinst för Stockholmsregionen genom att främja en uthållig samhällsutveckling och en god livsmiljö för boende och företag i regionen".

    I denna bok belyses hur lagstiftningen har tillämpats och vilka lärdomar som kan dras efter nationalstadsparkens första sju år. Här diskuteras också frågor kring natur- och kulturvärden och behov av utvecklingslinjer vad gäller såväl förvaltning, rättstillämpning som lagstiftning.

    Nationalstadsparken har liknats vid ett experiment i hållbar utveckling och är på så sätt av intresse för alla dem som intresserar sig för och brottas med frågor om hur en hållbar samhällsutveckling ska kunna uppnås. Boken vänder sig därför till såväl allmänheten, tjänstemän och politiker som till studerande och forskare i alla ämnen.

    (Baksidestext)

  • 46.
    Holmgren, Mattias
    et al.
    Luleå University of Technology, Department of Civil, Environmental and Natural Resources Engineering, Operation, Maintenance and Acoustics.
    Söderholm, Peter
    Luleå University of Technology, Department of Civil, Environmental and Natural Resources Engineering, Operation, Maintenance and Acoustics.
    A process approach to maintenance-related hazard identification2008In: International Journal of COMADEM, ISSN 1363-7681, Vol. 11, no 1, p. 36-46Article in journal (Refereed)
    Abstract [en]

    History has shown that maintenance contributes to incidents and accidents with extensive losses. The purpose of this paper is to describe a process approach for maintenance-related hazard identification, in order to support continuous risk reduction in maintenance activities. The proposed maintenance process model has been applied within a study of maintenance execution of DC-motors in paper-mills. However, both the model and the findings from its application are believed to be transferable to the maintenance of other critical technical systems. A recurring hazard is insufficient feedback. Hence, proper feedback may help to reduce risk. Further findings indicate that incidents manifested during execution may be due to hazards in other process phases. The maintenance of complex and critical systems is also affected by the work environment and knowledge of technicians, whose requirements should be fulfilled through appropriate organisational and technical support.

  • 47.
    Johansson, Christer
    et al.
    Department of Environmental Science and Analytical Chemistry, Stockholm University, SE-10691 Stockholm, Sweden.
    Lövenheim, Boel
    Environment and Health Administration, SLB, Stockholm, Sweden.
    Schantz, Peter
    Swedish School of Sport and Health Sciences, GIH, Department of Sport and Health Sciences, Åstrand Laboratory of Work Physiology, The Research Unit for Movement, Health and Environment.
    Wahlgren, Lina
    Swedish School of Sport and Health Sciences, GIH, Department of Sport and Health Sciences, Åstrand Laboratory of Work Physiology, The Research Unit for Movement, Health and Environment.
    Almström, Peter
    WSP Civils, Stockholm, Sweden.
    Markstedt, Anders
    WSP Civils, Stockholm, Sweden.
    Strömgren, Magnus
    Department of Geography and Economic History, Umeå University, Umeå, Sweden .
    Forsberg, Bertil
    Division of Occupational and Environmental Medicine, Department of Public Health and Clinical Medicine, Umeå University, Umeå, Sweden.
    Nilsson Sommar, Johan
    Division of Occupational and Environmental Medicine, Department of Public Health and Clinical Medicine, Umeå University, Umeå, Sweden.
    Impacts of air pollution and health by changing commuting from car to bicycle2017In: Science of the Total Environment, ISSN 0048-9697, E-ISSN 1879-1026, Vol. 584-585, p. 55-63Article in journal (Refereed)
    Abstract [en]

    Our study is based on individual data on people’s home and work addresses, as well as their age, sex and physical capacity, in order to establish realistic bicycle-travel distances. A transport model is used to single out data on commuting preferences in the County Stockholm. Our analysis shows there is a very large potential for reducing emissions and exposure if all car drivers living within a distance corresponding to a maximum of a 30 minute bicycle ride to work would change to commuting by bicycle. It would result in more than 111 000 new cyclists, corresponding to an increase of 209% compared to the current situation.

    Mean population exposure would be reduced by about 7% for both NOx and black carbon (BC) in the most densely populated area of the inner city of Stockholm. Applying a relative risk for NOx of 8% decrease in all-cause mortality associated with a 10 µg m-3 decrease in NOx, this corresponds to more than 449 (95% CI: 340 - 558) years of life saved annually for the Stockholm county area with 2.1 million inhabitants. This is more than double the effect of the reduced mortality estimated for the introduction of congestion charge in Stockholm in 2006. Using NO2 or BC as indicator of health impacts, we obtain 395 (95% CI: 172 - 617) and 185 (95% CI: 158 - 209) years of life saved for the population, respectively. The calculated exposure of BC and its corresponding impacts on mortality are likely underestimated. With this in mind the estimates using NOx, NO2 and BC show quite similar health impacts considering the 95% confidence intervals.

  • 48.
    Jägare, Veronica
    et al.
    Luleå University of Technology, Department of Civil, Environmental and Natural Resources Engineering, Operation, Maintenance and Acoustics.
    Karim, Ramin
    Luleå University of Technology, Department of Civil, Environmental and Natural Resources Engineering, Operation, Maintenance and Acoustics.
    Juntti, Ulla
    Omicold AB.
    Söderholm, Peter
    Trafikverket.
    A framework for testbed concept in railway2019In: PROCEEDINGS: International Heavy Haul Association Conference June 2019, 2019, p. 986-Conference paper (Refereed)
    Abstract [en]

    One major prerequisite for an effective implementation and innovation process is the enablement and provision of a collaborative environment. A common area for multi-organisational collaboration together with a technology platform, enabling data sharing and Big Data Analytics, has been developed called ‘Testbed Railway’ with a corresponding framework ‘Railway 4.0’. Testbed Railway can be used to strengthen the railway industry's adaptability and competitiveness by developing and providing a testbed for research and innovation in the rail industry, nationally and internationally.

  • 49.
    Jägare, Veronica
    et al.
    Luleå University of Technology, Department of Civil, Environmental and Natural Resources Engineering, Operation, Maintenance and Acoustics.
    Karim, Ramin
    Luleå University of Technology, Department of Civil, Environmental and Natural Resources Engineering, Operation, Maintenance and Acoustics.
    Söderholm, Peter
    Trafikverket.
    Larsson-Kråik, Per-Olof
    Trafikverket.
    Juntti, Ulla
    Omicold AB.
    Change management in digitalised operation and maintenance of railway2019In: PROCEEDINGS: International Heavy Haul Association Conference June 2019, 2019, p. 904-911Conference paper (Refereed)
    Abstract [en]

    Globally, railway is experiencing a major technology transformation (or paradigm shift), triggered by the enhanced utilisation of digital technology. This technological transformation affects not only the technical systems, i.e. railway infrastructure and rolling stock, but also regulations, organisations, processes,and individuals. Hence, hardware, software, but also liveware (i.e. humans) are affected. Today, the digitalisation of railway is characterised by digital services. There are also a range of challenges, e.g. data acquisition,transformation, modelling, processing, visualisation, safety, security, quality, and information assurance. To deal with these challenges, the railway industry needs to define strategies, which enable a smooth transformation of the existing configuration to a digitalised system. Digital railway requires a holistic change management approach based on system-of-systems thinking and a set of appropriate technologies and methodologies. The railway digitalisation strategy should be based on systematic risk management that address aspects of, e.g., information security, traffic safety and project risk. In addition, managing changes for a digitalised railway effectively and efficiently also requires a framework for aspects such as needs finding, requirement identification, and impact of changes for individual, teams and organisation. In this work a major case studywithin the ePilot, has been performed in context of the operation and maintenance processes of the Swedish railway. Therefore, this paper aims to propose a framework for implementing innovations and driving change in a digitalised railway.

  • 50.
    Karim, Ramin
    et al.
    Luleå University of Technology, Department of Civil, Environmental and Natural Resources Engineering, Operation, Maintenance and Acoustics.
    Candell, Olov
    Söderholm, Peter
    Development of ICT-based maintenance support services2009In: Journal of Quality in Maintenance Engineering, ISSN 1355-2511, E-ISSN 1758-7832, Vol. 15, no 2, p. 127-150Article in journal (Refereed)
    Abstract [en]

    Purpose - The purpose of this paper is to describe a taxonomy for an eMaintenance management framework (eMMF) based on a service-oriented approach, in order to facilitate the development of information and communication technology (ICT)-based maintenance support services aimed at actors within the maintenance process related to complex technical industrial systems. Design/methodology/approach - To fulfil this purpose, a case study of a modern multi-role combat aircraft is selected as an appropriate research strategy and supported by a literature study. Empirical data are collected through interviews, workshops, document studies, and observations. A framework is developed and evaluated using a prototype within the studied case. The study is performed in close cooperation with the aircraft's type certificate holder and the customer representative and operator in one country. Findings - The proposed eMMF aids in the identification and development of ICT-based maintenance support services tailored for specific maintenance actors and their activities. Research limitations/implications - To further test the usefulness of the proposed framework, a larger scale application must be performed. This can involve additional stakeholders or a larger part of the technical system in the selected case, or another case dealing with complex technical industrial systems. Practical implications - The proposed framework supports the identification of required information services that support the maintenance process, which in turn supports the development of a service-oriented architecture (SOA) aimed at proper maintenance information logistics. Hence, people working with information logistics for maintenance purposes can use the framework as a support tool. Originality/value - The proposed framework combines a process and service-oriented approach, which facilitates the development of SOA-based information services by giving valuable input to more traditional system-oriented approaches

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