Change search
Refine search result
12 51 - 81 of 81
CiteExportLink to result list
Permanent link
Cite
Citation style
  • apa
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf
Rows per page
  • 5
  • 10
  • 20
  • 50
  • 100
  • 250
Sort
  • Standard (Relevance)
  • Author A-Ö
  • Author Ö-A
  • Title A-Ö
  • Title Ö-A
  • Publication type A-Ö
  • Publication type Ö-A
  • Issued (Oldest first)
  • Issued (Newest first)
  • Created (Oldest first)
  • Created (Newest first)
  • Last updated (Oldest first)
  • Last updated (Newest first)
  • Disputation date (earliest first)
  • Disputation date (latest first)
  • Standard (Relevance)
  • Author A-Ö
  • Author Ö-A
  • Title A-Ö
  • Title Ö-A
  • Publication type A-Ö
  • Publication type Ö-A
  • Issued (Oldest first)
  • Issued (Newest first)
  • Created (Oldest first)
  • Created (Newest first)
  • Last updated (Oldest first)
  • Last updated (Newest first)
  • Disputation date (earliest first)
  • Disputation date (latest first)
Select
The maximal number of hits you can export is 250. When you want to export more records please use the Create feeds function.
  • 51. Jönsson, Anders
    et al.
    Broman, Göran
    Östholm, Stefan
    Multidisciplinary Simulation of Active Control of Machine-Tool Vibration in Turning2000In: System and Control:Theory and Applications, ISSN 960-8052-11-4, p. 61-64Article in journal (Refereed)
    Abstract [en]

    The increasing computer power in modern manufacturing machines has given the possibility to integrate advanced computer based control systems. In this work a simulation model for active control of machine-tool vibration in turning operations is described. The model contains both the mechanical structure and the control system. The simulation is done with and without active control. The structure vibration is suppressed by simulating actuators. The simulation is done to get a first indication of the potentials of a proposed new tool holder design and to test the usability of such multidisciplinary simulations as a supporting tool for product development. The results show that it is possible to simulate the total system. The vibrations of the tool holder tip could be decreased significantly by using reasonable forces. The software used was found to be very user friendly and to be able to perform such coupled simulations in this way during product development must be considered to be a great advantage.

  • 52. Jönsson, Anders
    et al.
    Wall, Johan
    Broman, Göran
    A Virtual Machine Concept for Real-Time Simulation of Machine Tool Dynamics2005In: International journal of machine tools & manufacture, ISSN 0890-6955, E-ISSN 1879-2170, Vol. 45, no 7, p. 795-801Article in journal (Refereed)
    Abstract [en]

    When designing CNC machine tools it is important to consider the dynamics of the control, the electrical components and the mechanical structure of the machine simultaneously. This paper describes the structure and implementation of a concept for real-time simulation of such machine tools using a water jet cutting machine as an application. The concept includes a real control system, simulation models of the dynamics of the machine and a virtual reality model for visualisation. The real-time capability of the concept, including the simulation of electrical and rather detailed mechanical component models is proofed. The validation process indicates good agreement between simulation and measurement, but suggests further studies on servo motor, connection and flexibility modelling. However, already from the initial simulation results presented in this paper it can be concluded that the influence of structural flexibility on manufacturing accuracy is of importance at desired feeding rates and accelerations. The fully automated implementation developed in this work is a promising base for dealing with this trade-off between productivity and accuracy of the manufacturing process through multidisciplinary optimisation.

  • 53.
    Lagun Mesquita, Patricia
    et al.
    Blekinge Institute of Technology, Faculty of Engineering, Department of Strategic Sustainable Development. Blekinge Institute of Technology.
    Broman, Göran
    Blekinge Institute of Technology, Faculty of Engineering, Department of Strategic Sustainable Development.
    Hallstedt, Sophie
    Blekinge Institute of Technology, Faculty of Engineering, Department of Strategic Sustainable Development.
    Analyzing Social LCA approaches through the lens of Strategic Sustainable Development2016In: Proceedings of ISPIM Conferences, 2016, p. 1-13Conference paper (Refereed)
    Abstract [en]

    In recent years several approaches to Social LCA have been proposed. Despite recognized shortcomings of those, recent development has focused more on testing existing approaches and less on finding a unifying framework that can support Social LCA to deliver on its promise: to aid decision making regarding social issues related to product life cycles. This paper offers an analysis and evaluation of the potential contribution of the body of work on Social LCA to sustainable development using the Framework for Strategic Sustainable Development. A number of strengths and weaknesses from a strategic sustainability perspective are identified and recommendations to improve the support for how to deal with social issues in the product innovation process are provided.

  • 54.
    Lagun Mesquita, Patricia
    et al.
    Blekinge Institute of Technology, Faculty of Engineering, Department of Strategic Sustainable Development. Blekinge Institute of Technology.
    Hallstedt, Sophie
    Blekinge Institute of Technology, Faculty of Engineering, Department of Strategic Sustainable Development.
    Broman, Göran
    Blekinge Institute of Technology, Faculty of Engineering, Department of Strategic Sustainable Development.
    An Introductory Approach to Concretize Social Sustainability for Sustainable Manufacturing2016In: Proceedings of TMCE 2016 / [ed] I. Horváth, J.-P. Pernot, Z. Rusák, 2016Conference paper (Refereed)
    Abstract [en]

    Despite the growing awareness of sustainability issues and importance of considering sustainability aspects in the product innovation process, the methodological support for doing so is still immature compared to the methodological support for considering other aspects in the decision-making, such as product performance and manufacturability. The immaturity is particularly pronounced regarding the social dimension of sustainability. In this paper we use a novel process for identifying sustainability criteria and estimating a sustainability compliance index, with the purpose of supporting inclusion of social sustainability aspects in the decision-making in product development. By including social sustainability aspects into a compliance metric, the foundations for strategic and operative decisions can be integrated. The process has been developed and tested collaboratively with industry representatives in a selected case company. Preliminary results show that social sustainability criteria can be integrated in a meaningful way into a more complete metric, and that the learning resulting from gathering knowledge and experience is a first deployable benefit of the process. Challenges and possible ways forward for further implementing social sustainability aspects in product development are also identified and discussed. The next step will be to further test the applicability of the results, by involving more representatives in the case company and from companies in its value chain.

  • 55.
    Levy Franca, César
    et al.
    Blekinge Institute of Technology, Faculty of Engineering, Department of Strategic Sustainable Development.
    Broman, Göran
    Blekinge Institute of Technology, Faculty of Engineering, Department of Strategic Sustainable Development.
    Basile, George
    Arizona State University, USA.
    Robèrt, Karl-Henrik
    Blekinge Institute of Technology, Faculty of Engineering, Department of Strategic Sustainable Development.
    Thompson, Anthony
    Blekinge Institute of Technology, Faculty of Engineering, Department of Strategic Sustainable Development.
    Exploring the Nexus of Product-Service Systems, Business Models and Sustainability - a need for strategic and practical approaches2017In: Journal of Cleaner Production, ISSN 0959-6526, E-ISSN 1879-1786Article in journal (Refereed)
    Abstract [en]

    Product-Service Systems (PSS) have been identified as potentially important for addressing sustainability challenges. However, progress has been relatively slow as regards realizing this potential, and a lack of practical approaches to the design of business models capable of supporting implementation of such PSS has been proposed as a partial reason. The aim of this study is to explore connections and the potential functional nexus between the three fields of PSS, Business Models and Sustainability, in pursuit of possible key enablers to further realization of the potential for sustainability-promoting PSS. A systematic review and analysis of the academic literature is performed. The review shows that, although a relatively new and unexplored endeavor, there is growing effort at the interface of the three fields. The review indicates that the main deficit so far is that the PSS and business model fields lack concrete guidelines and practical tools for how to embrace the sustainability dimension in a strategic way. Especially the strategic dimension emerges as a general finding from diverse sources as a potential key enabler for mutual benefits across the three fields. The study thus points to the need for research aiming at developing such guidelines and tools, and also at exploring case-based applications to create experiential knowledge, to fill the gaps in current theory and practice.

  • 56. Lindahl, Pia
    et al.
    Broman, Göran
    Robèrt, Karl-Henrik
    Material substitution and weight reduction as steps towards a sustainable disposable diaper2011Conference paper (Other academic)
    Abstract [en]

    Increasing market demands for 'sustainable products' has in the development of disposable diapers resulted in a focus on material substitution and weight reduction. In this study we have compared the strategic potential of these two approaches for development of the absorbing core of the product. The study indicates that regardless what strategy a company selects for reducing a products socio-ecological impact, both society and environment would benefit from a stronger focus on the long term goal of a sustainably product, instead of the milestones.

  • 57.
    Lindahl, Pia
    et al.
    Blekinge Institute of Technology, School of Engineering, Department of Strategic Sustainable Development.
    Robèrt, Karl-Henrik
    Blekinge Institute of Technology, School of Engineering, Department of Strategic Sustainable Development.
    Ny, Henrik
    Blekinge Institute of Technology, School of Engineering, Department of Strategic Sustainable Development.
    Broman, Göran
    Blekinge Institute of Technology, School of Engineering, Department of Strategic Sustainable Development.
    Strategic sustainability considerations in materials management2014In: Journal of Cleaner Production, ISSN 0959-6526, E-ISSN 1879-1786, Vol. 64, no feb 2014, p. 98-103Article in journal (Refereed)
    Abstract [en]

    Increasing awareness in business and society regarding socio-ecological impacts related to society's use of materials is a driver of new materials management practices. The aim of this study is to gain insight into what considerations come into focus and what types of solutions are revealed when companies apply a strategic sustainability perspective to materials management. Through literature reviews and semi-structured interviews we found that the companies studied have assessed material choices and related management actions, not only regarding their potential to reduce a selection of current socio-ecological impacts, but also regarding their potential to link to future actions to move towards the full scope of socio-ecological sustainability. Through this approach, these companies have found several ways through which materials with characteristics that are commonly considered problematic can be managed sustainably by making strategic use of some of these “problematic” characteristics and other characteristics of the materials. For example, a material associated with problems at end of life, could be managed in closed loops facilitated by the persistence of the material. Based on the findings, we conclude that by not applying a strategic sustainability perspective to materials management, organizations risk phasing out materials perceived to be unsustainable which, managed differently, could be helpful for sustainable development.

  • 58.
    Magnevall, Martin
    et al.
    Blekinge Institute of Technology, School of Engineering, Department of Mathematics and Natural Sciences.
    Josefsson, Andreas
    Blekinge Institute of Technology, School of Engineering, Department of Mechanical Engineering.
    Ahlin, Kjell
    Blekinge Institute of Technology, School of Engineering, Department of Mechanical Engineering.
    Broman, Göran
    Blekinge Institute of Technology, School of Engineering, Department of Mechanical Engineering.
    Nonlinear structural identification by the "reverse Path" spectral method2012In: Journal of Sound and Vibration, ISSN 0022-460X, E-ISSN 1095-8568, Vol. 331, no 4, p. 938-946Article in journal (Refereed)
    Abstract [en]

    When dealing with nonlinear dynamical systems, it is important to have efficient, accurate and reliable tools for estimating both the linear and nonlinear system parameters from measured data. An approach for nonlinear system identification widely studied in recent years is "Reverse Path". This method is based on broad-band excitation and treats the nonlinear terms as feedback forces acting on an underlying linear system. Parameter estimation is performed in the frequency domain using conventional multiple-input-multiple- output or multiple-input-single-output techniques. This paper presents a generalized approach to apply the method of "Reverse Path" on continuous mechanical systems with multiple nonlinearities. The method requires few spectral calculations and is therefore suitable for use in iterative processes to locate and estimate structural nonlinearities. The proposed method is demonstrated in both simulations and experiments on continuous nonlinear mechanical structures. The results show that the method is effective on both simulated as well as experimental data.

  • 59.
    Magnevall, Martin
    et al.
    Blekinge Institute of Technology, School of Engineering, Department of Mechanical Engineering.
    Lundblad, Mikael
    Ahlin, Kjell
    Blekinge Institute of Technology, School of Engineering, Department of Mechanical Engineering.
    Broman, Göran
    Blekinge Institute of Technology, School of Engineering, Department of Mechanical Engineering.
    High Frequency Measurements of Cutting Forces in Milling by Inverse Filtering2012In: Machining science and technology, ISSN 1091-0344, E-ISSN 1532-2483, Vol. 16, no 4, p. 487-500Article in journal (Refereed)
    Abstract [en]

    Accurate estimates of cutting forces are important in the evaluation of different cutting tool geometries and concepts. However, dynamic influences from the measurement system affect the result, which can make the obtained cutting force data erroneous and misleading. This article presents a method to obtain an inverse filter which compensates for the dynamic influences of the measurement system. Using this approach, unwanted dynamic effects of the measurement system can be counteracted, making it possible to retain information related to the cutting forces contained in the high frequency region. The advantage of the proposed method is illustrated by comparing simulated, inverse- and low-pass filtered forces to unfiltered forces under different cutting conditions. The results show that inverse filtering increases the usable frequency range of the force dynamometer and thereby provide more reliable results compared to both low-pass and unfiltered forces.

  • 60.
    Missimer, Merlina
    et al.
    Blekinge Institute of Technology, Faculty of Engineering, Department of Strategic Sustainable Development.
    Robèrt, Karl-Henrik
    Blekinge Institute of Technology, Faculty of Engineering, Department of Strategic Sustainable Development.
    Broman, Göran
    Blekinge Institute of Technology, Faculty of Engineering, Department of Strategic Sustainable Development.
    A Strategic Approach to Social Sustainability - Part 2: A Principle-based Definition2017In: Journal of Cleaner Production, ISSN 0959-6526, E-ISSN 1879-1786, Vol. 140, no Part 1, p. 42-52Article in journal (Refereed)
    Abstract [en]

    The vast and growing array of concepts, methods and tools in the sustainability field imply a need for a structuring and coordinating framework, including a unifying and operational definition of sustainability. One attempt at such framework began over 25 years ago and is now widely known as the Framework for Strategic Sustainable Development. However, as with the larger sustainability field, the social dimension of this framework has been found to not be sufficiently science-based and operational and thus in need of further development. In this two-part series an attempt at a science-based, operational definition of social sustainability is presented. In part 1 a systems-based approach to the social system was presented, based on extensive literature studies as well as conceptual modelling sessions using the Framework for Strategic Sustainable Development as the guiding structure. The focus of that study was on the essential aspects of the social system that need to be sustained, namely trust, common meaning, diversity, capacity for learning and capacity for self-organization. The aim of this second paper is to identify and present overriding mechanisms by which these aspects of the social system can be degraded, thereby finding exclusion criteria for re-design for sustainability. Further literature studies, conceptual modelling sessions and initial testing of this prototype with partners in academia, business and NGOs were performed. Based on the understanding of the essential aspects of the social system and the identified overriding mechanisms of degradation of these, a hypothesis for a definition of social sustainability by basic principles is presented. The proposed principles are that in a socially sustainable society, people are not subject to structural obstacles to: (1) health, (2) influence, (3) competence, (4) impartiality and (5) meaning-making. Overall, the two papers aim to provide a hypothesis for a definition of social sustainability, which is general enough to be applied irrespective of spatial and temporal constraints, but concrete enough to guide decision-making and monitoring. It is also a further development of the social dimension of the FSSD, which practitioners and researchers have requested for some time and can act as a support towards better integration of social sustainability in many other fields, e.g., sustainable product innovation, sustainable supply chain management, sustainable transport system development, and others.

  • 61.
    Missimer, Merlina
    et al.
    Blekinge Institute of Technology, Faculty of Engineering, Department of Strategic Sustainable Development.
    Robèrt, Karl-Henrik
    Blekinge Institute of Technology, Faculty of Engineering, Department of Strategic Sustainable Development.
    Broman, Göran
    Blekinge Institute of Technology, Faculty of Engineering, Department of Strategic Sustainable Development.
    A Strategic Approach to Social Sustainability -Part 1: Exploring the Social System2017In: Journal of Cleaner Production, ISSN 0959-6526, E-ISSN 1879-1786, Vol. 140, no Part 1, p. 32-41Article in journal (Refereed)
    Abstract [en]

    The vast and growing array of concepts, methods and tools in the sustainability field imply a need for a structuring and coordinating framework, including a unifying and operational definition of sustainability. One attempt at such framework began over 25 years ago and is now widely known as the Framework for Strategic Sustainable Development. However, as with the larger sustainability field, the social dimension of this framework has been found to not be sufficiently science-based and operational and thus in need of further development. In this two-part series an attempt at a science-based, operational definition of social sustainability is presented. In this paper (part one), a systems-based approach to the social system is presented, as a basis for presenting a zero-hypothesis of principles for social sustainability in part two. Extensive literature studies as well as conceptual modeling sessions were performed and the social system was examined from various angles – complex adaptive system studies, human needs theory and other social sciences, and insights from these fields were woven together. The whole work was structured and guided by the Framework for Strategic Sustainable Development. The focus of the study was on the essential aspects of the social system that need to be sustained (that cannot be systematically degraded) for it to be possible for people to meet their needs. These essential aspects were found to be trust, common meaning, diversity, capacity for learning and capacity for self-organization. Trust seems to be generally acknowledged to be the overriding aspect of a vital social system. A sense of common meaning is also stated by several authors as an important part of social capital and something that helps to keep a group or society together. Diversity is acknowledged as essential for resilience; in the human social system this can be interpreted as, e.g., diversity of personalities, ages, gender, skills. Capacity for learning and self-organization are also motivated from a resilience point of view by several authors. These results form a basis for the hypothesis for a definition of social sustainability presented in paper 2, which in turn is a step towards creating an enhanced support for strategic planning and innovation for sustainability.

  • 62.
    Missimer, Merlina
    et al.
    Blekinge Institute of Technology, Faculty of Engineering, Department of Strategic Sustainable Development.
    Robèrt, Karl-Henrik
    Blekinge Institute of Technology, Faculty of Engineering, Department of Strategic Sustainable Development.
    Broman, Göran
    Blekinge Institute of Technology, Faculty of Engineering, Department of Strategic Sustainable Development.
    A Systems Perspective on ISO 260002014Conference paper (Refereed)
    Abstract [en]

    Since its publication in 2010, ISO 26000 has become the de-facto standard of Corporate Social Responsibility (CSR). While not a certifiable standard in ISO terms, but rather a guidance document, it has become the document many corporations use as their basis for CSR work. ISO 26000 claims that the objective of social responsibility is to contribute to sustainable development, using the Brundtland definition – development, which meets the needs the present without compromising the ability of future generations to meet their own needs – as the basis for sustainable development. However, the Brundtland definition, while commonly referred to, is not sufficiently concrete to give guidance for strategic planning and action in businesses, municipalities and society at large. Therefore it is helpful to supplement the Brundtland definition with a framework that allows for this concrete and strategic planning, e.g. the Framework for Strategic Sustainable Development (FSSD). The FSSD is based on a principled definition of sustainability, defining social and ecological sustainability in more operational terms, and includes guidelines for how to contribute systematically and strategically to fulfillment of this definition. It is a transdisciplinary framework built on insights from systems thinking and has been continuously developed as well as used and improved in organizations all over the world for the last two decades. A particular recent development focus has been the social dimension of sustainability, with new insights based on the application of systems thinking to social systems having been recently presented. In this paper, these new insights are used to analyze and evaluate ISO 26000´s contribution to sustainability, highlighting both benefits and shortcomings of ISO 26000 from a social systems and strategic sustainable development perspective. Main points include that, while ISO 26000 is comprehensive in it´s scope and provides a vast achievement in terms of international consensus building around the essential issues in CSR, it is not based on a scientific understanding of social and ecological systems and is therefore a document highlighting current societal expectations rather than a document allowing organizations to innovate, plan, act and monitor long-term for sustainability. The paper further points out examples of aspects of sustainability that are likely to become issues in the future, but that are currently not covered by the ISO guidance. Finally, the paper points at research needed to explore more in detail in which ways ISO 26000 can support strategic working towards sustainability, and in which areas other tools are necessary.

  • 63.
    Missimer, Merlina
    et al.
    Blekinge Institute of Technology, Faculty of Engineering, Department of Strategic Sustainable Development.
    Robèrt, Karl-Henrik
    Blekinge Institute of Technology, Faculty of Engineering, Department of Strategic Sustainable Development.
    Broman, Göran
    Blekinge Institute of Technology, Faculty of Engineering, Department of Strategic Sustainable Development.
    Lessons from the field:A first evaluation of working with the elaborated social dimension of the Framework for Strategic Sustainable Development2014In: Relating Systems Thinking and Design 2014 Symposium Proceedings / [ed] Birger Sevaldson and Peter Jones, Oslo, 2014Conference paper (Refereed)
    Abstract [en]

    Arguably, sustainability is the most complex challenge humanity has faced to date. Not only are the impacts of our behavior resulting in more and more sever repercussions, but we are also realizing that the causes of unsustainability are deeply embedded in the design of many of the systems we rely on. This means, of course, also, that solutions to the problem cannot be one-off ideas, but that strategic and systematic transformation of many of our systems is needed. Because of the necessity of the re-design of our economic and other man-made systems, it has been suggested that sustainability science should be considered a “science of design” (Miller 2011). Perhaps it can be considered one of the most “wicked” cases of design, as it needs to aim both for significant impact and a participatory approach to solve the challenge.

     

    One framework that approaches the sustainability challenge from a design angle is the Framework for Strategic Sustainable Development (FSSD). Specifically, it is based on the idea of strategically and step-wise designing sustainability out of the systems we currently rely on. The FSSD is a trans-disciplinary framework built on insights from systems thinking and has been continuously developed for the last two decades. Its core is built on backcasting from principles of re-design for sustainability, which allows for wide-spread agreement on what sustainability means and allows for creativity within these constraints, so that each group or organization can create their own path towards sustainability within these constraints. The FSSD has been used in organizations all over the world to create real transformation towards sustainability.

     

    A particular recent development focus has been the social dimension of sustainability. Following the idea of sustainability as a design science, the development was based on a design research methodology (e.g Blessing and Chakrabarti 2009), which included a suggested new ‘prototype’ for the approach to social sustainability within the FSSD. Based on a systems approach to the social system, five new principles of social sustainability have been proposed (Missimer 2013, Missimer et al. 2013a, 2013b). This paper aims to contribute to the evaluation stage of the prototype and presents preliminary results of an evaluation based on field-work with the new social sustainability principles. Overall, a clearer definition of social sustainability is not just for theoretical purposes, but because without a clear theoretical concept, it is hard to strategically work towards social sustainability in practice.

    The data for evaluation comes from workshops that were run with sustainability professionals (also called practitioners) who use the FSSD in their work. In three workshops, the authors, as well as groups of sustainability professionals, used the new social sustainability principles to assess projects on their contribution to social sustainability. The workshops were followed by reflections by and interviews with the professionals assessing the usability of the new principles.

     

    Preliminary results indicate that it is indeed possible to use the newly proposed social sustainability principles in the manner intended and that the approach yields results that are valuable to the professional and the potential clients of these professionals. Integration with existing tools commonly used by the practitioners was possible, although further refinement of the designed tool prototypes will be needed.

     

    Practitioners reflected that the earlier approach to social sustainability lacked in clarity and the ability to structure other tools and concepts in the field. They reported that most practitioners designed their own way of working with social sustainability, which lead to confusion and undermined a common approach. They appreciated the more thorough and scientific approach to the social aspects presented in the new approach, which allowed for a common language and a more thorough assessment of contributions to un-sustainability. The practitioners also reported new insights regarding the use and connection to other tools and concepts in the field of social sustainability.

     

    However, challenges were expressed as regards the somewhat more difficult nature of the science behind the new approach and how this impacted the ease of working with the framework for practitioners. The paper ends with some reflections by the authors. In further research this preliminary evaluation will be expanded and built upon to facilitate continuous improvement and applicability of the FSSD.

  • 64. Missimer, Merlina
    et al.
    Robèrt, Karl-Henrik
    Broman, Göran
    Sverdrup, Harald
    Exploring the possibility of a systematic and generic approach to social sustainability2010In: Journal of Cleaner Production, ISSN 0959-6526, E-ISSN 1879-1786, Vol. 18, no 10-11, p. 1107-1112Article in journal (Refereed)
    Abstract [en]

    There is a growing need to understand how existing concepts and tools for sustainability relate to each other and to a robust, trans-disciplinary systems perspective for sustainability. As a response, a group of scientists, including some of the authors, have developed a framework based on backcasting from sustainability principles over the last 20 years – the Framework for Strategic Sustainable Development (FSSD), also known as The Natural Step Framework. The intent of this study is to scrutinize the existing framework as regards its social dimension. The study demonstrates dichotomies and lack of robustness and proposes a way forward to make the social dimension of the FSSD more cohesive as well as operational.

  • 65. Ny, Henrik
    et al.
    Broman, Göran
    MacDonald, Jamie
    Yamamoto, Ryoichi
    Robèrt, Karl-Henrik
    Sustainable Management of Materials Products and Services – an Approach to Strategic LCA2004Conference paper (Refereed)
    Abstract [en]

    This paper outlines the need for a more structured and simplified Life Cycle Assessment approach – called Strategic LCA. It builds on a previously published and peer-reviewed methodology using backcasting from basic principles of socio-ecological sustainability. The idea is to simplify, not by excluding parts of the traditionally covered dimensions in this field, but by a new way of setting system boundaries. Rather than applying boundaries related to geographic regions, or fields of expertise, or particular impacts, all issues found to be relevant as regards achieving sustainability are taken into account. To that end, we use four previously published generic principles of socio-ecological sustainability for the scrutinizing of materials, products and services.

  • 66. Ny, Henrik
    et al.
    Hallstedt, Sophie
    Robèrt, Karl-Henrik
    Broman, Göran
    Introducing Templates for Sustainable Product Development: A Case Study of Televisions at the Matsushita Electric Group2008In: Journal of Industrial Ecology, ISSN 1088-1980, E-ISSN 1530-9290, Vol. 12, no 4, p. 600-623Article in journal (Refereed)
    Abstract [en]

    We have previously developed a method for sustainable product development (MSPD) based on backcasting from basic sustainability principles. The MSPD informs investigations of product-related social and ecological sustainability aspects throughout a concurrent engineering product development process.We here introduce “templates” for sustainable product development (TSPDs) as a complement. The idea is to help product development teams to arrive faster and more easily at an overview of the major sustainability challenges and opportunities of a product category in the early development phases. The idea is also to inform creative communication between top management, stakeholders, and product developers. We present this approach through an evaluation case study, in which the TSPDs were used for a sustainability assessment of televisions (TVs) at the Matsushita Electric Group.We study whether the TSPD approach has the ability to (1) help shift focus from gradual improvements of a selection of aspects in relation to past environmental performance of a product category to a focus on the remaining gap to a sustainable situation, (2) facilitate consensus among organizational levels about major sustainability challenges and potential solutions for a product category, and (3) facilitate continued dialogue with external sustainability experts, identifying improvements that are relevant for strategic sustainable development. Our findings indicate that the TSPD approach captures overall sustainability aspects of the life cycle of product categories and that it has the above abilities.

  • 67. Ny, Henrik
    et al.
    MacDonald, Jamie
    Broman, Göran
    Robèrt, Karl-Henrik
    Sustainability Constraints as System Boundaries: Introductory Steps Toward Stategic Life-Cycle Management2008In: Web-based green products life-cycle management systems: reverse supply-chain utilization / [ed] Wang, Hsiao-Fan, Hershey, USA: IGI Global: Information Science Reference , 2008Chapter in book (Refereed)
    Abstract [en]

    Sustainable management of materials and products requires continuous evaluation of numerous complex social, ecological, and economic factors. Many tools and methods are emerging to support this. One of the most rigorous is life-cycle assessment (LCA). But LCAs often lack a sustainability perspective and bring about difficult trade-offs between specificity and depth, on the one hand, and comprehension and applicability, on the other. This article applies a framework for strategic sustainable development to foster a new general approach to the management of materials and products, here termed “strategic life-cycle management.” This includes informing the overall analysis with aspects that are relevant to a basic perspective on (1) sustainability, and (2) strategy to arrive at sustainability. Early experiences indicate that the resulting overview could help avoiding costly assessments of flows and practices that are not critical from a sustainability and/or strategic perspective and help identifying strategic knowledge gaps that need further assessment.

  • 68.
    Robèrt, Karl-Henrik
    et al.
    Blekinge Institute of Technology, Faculty of Engineering, Department of Strategic Sustainable Development.
    Borén, Sven
    Blekinge Institute of Technology, Faculty of Engineering, Department of Strategic Sustainable Development.
    Ny, Henrik
    Blekinge Institute of Technology, Faculty of Engineering, Department of Strategic Sustainable Development.
    Broman, Göran
    Blekinge Institute of Technology, Faculty of Engineering, Department of Strategic Sustainable Development.
    A strategic approach to sustainable transport system development - Part 1: attempting a generic community planning process model2017In: Journal of Cleaner Production, ISSN 0959-6526, E-ISSN 1879-1786, Vol. 140, no Part 1, p. 53-61Article in journal (Refereed)
    Abstract [en]

    Electric vehicles seem to offer a great potential for sustainable transport development. The Swedish pioneer project GreenCharge Southeast is designed as a cooperative action research approach that aims to explore a roadmap for a fossil-free transport system by 2030 with a focus on electric vehicles. It is the following combination of objectives that puts demand on a new process model adapted for cross-sector and cross-disciplinary cooperation: (i) a fossil-free transport system in Sweden by 2030 and, to avoid sub-optimizations in the transport sector, (ii) assuring that solutions that support (i) also serve other aspects of sustainability in the transport sector and, to avoid that sustainable solutions in the transport sector block sustainable solutions in other sectors, (iii) assuring cohesive creativity across sectors and groups of experts and stakeholders. The new process model was applied in an action-research mode for the exploration of electric vehicles within a fully sustainable transport system to test the functionality of the model in support of its development. To deliver on the above combination of objectives, a framework was needed with principles for sustainability that are universal for any sector as boundary conditions for redesign, and with guidelines for how any organization or sector can create economically feasible step- by-step transition plans. The Framework for Strategic Sustainable Development (FSSD) is designed to serve such purposes and therefore is embedded into the new process model. The exploration of this new model also helped to identify four interdependent planning perspectives (‘Resource base’, ‘Spatial’, ‘Technical’ and ‘Governance’) that should be represented by the respective experts and stakeholders using the model. In general, the new process model proved helpful by giving diverse stakeholders with various competences and representing various planning perspectives a common, robust, and easy-to- understand goal and a way of working that was adequate for each of their contexts. Furthermore, the evolving process model likely is relevant and useful not only for transport planning and electric vehicles, but for any other societal sector as well and thus for sustainable community planning in general. 

  • 69.
    Robèrt, Karl-Henrik
    et al.
    Blekinge Institute of Technology, Faculty of Engineering, Department of Strategic Sustainable Development.
    Broman, Göran
    Blekinge Institute of Technology, Faculty of Engineering, Department of Strategic Sustainable Development. Blekinge Inst Technol, Dept Strateg Sustainable Dev, S-37179 Karlskrona, Sweden..
    Prisoners' dilemma misleads business and policy making2017In: Journal of Cleaner Production, ISSN 0959-6526, E-ISSN 1879-1786, Vol. 140, no Part 1, p. 10-16Article in journal (Refereed)
    Abstract [en]

    The prisoners' dilemma is a game-theoretical construct about trust. It can be seen as a simple version of the 'tragedy of the commons', which is often used in the sustainability context as a metaphor for the tension between responsibility for common resources and the perceived self-benefit to individual organizations, regions or nations who neglect such responsibility in the short term. However, other game theory and developments in sustainability science imply that the prisoners' dilemma mind-set is delusive and misleading for both business and policy making. It helps obscure an even more important aspect of proactive leadership for sustainability: the potential self-benefit of understanding the dynamics of major system change better than one's 'competitors'. The UN 1972,1992; and 2012 summits on sustainability, as well as the many summits on climate change, have been valuable milestones for influencing societal leadership at all levels. However, due to the prisoners' dilemma mind-set, they have also indirectly helped reinforce the idea that sustainability only pays off if the costs of achieving it are shared by all. That, in turn, has encouraged decision makers to believe that 'our organization's, region's or nation's sustainability activity must rely on policy making changing the rules of the game for everybody'. This focus on policy making as the only or main facilitator of sustainability efforts delays the needed transition of global society. By considering game theory such as tit-for-tat and modern systems science for sustainability, this paper illuminates major shortcomings of the prisoners' dilemma in the context of sustainability, and attempts to provide a more fruitful mind-set that can be motivated both theoretically and empirically. It is argued that a large part of the self-benefit of proactivity for sustainability is direct, i.e. independent of other actors' actions for the common good. In addition, it is argued that the self-benefit to businesses can be further increased through voluntary collaboration with other businesses to promote the common good, as well as through collaboration between proactive businesses and policy makers. Currently, none of this is intelligently and operationally part of mainstream leadership and public discourse on sustainability. The clarifications provided in this paper can lead to a much needed shift in mind-set among many leaders, not least political leaders, many of which seem to be trapped in simplistic prisoners' dilemma thinking and who act accordingly. (C) 2016 Elsevier Ltd. All rights reserved.

  • 70.
    Robèrt, Karl-Henrik
    et al.
    Blekinge Institute of Technology, School of Engineering, Department of Strategic Sustainable Development.
    Broman, Göran
    Blekinge Institute of Technology, School of Engineering, Department of Strategic Sustainable Development.
    Basile, George
    Analyzing the concept of planetary boundaries from a strategic sustainability perspective: How does humanity avoid tipping the planet?2013In: Ecology & society, ISSN 1708-3087, E-ISSN 1708-3087, Vol. 18, no 2Article in journal (Refereed)
    Abstract [en]

    Recently, an approach for global sustainability, the planetary-boundary approach (PBA), has been proposed, which combines the concept of tipping points with global-scale sustainability indicators. The PBA could represent a significant step forward in monitoring and managing known and suspected global sustainability criteria. However, as the authors of the PBA describe, the approach faces numerous and fundamental challenges that must be addressed, including successful identification of key global sustainability metrics and their tipping points, as well as the coordination of systemic individual and institutional actions that are required to address the sustainability challenges highlighted. We apply a previously published framework for systematic and strategic development toward a robust basic definition of sustainability, i.e., the framework for strategic sustainable development (FSSD), to improve and inform the PBA. The FSSD includes basic principles for sustainability, and logical guidelines for how to approach their fulfillment. It is aimed at preventing unsustainable behavior at both the micro, e.g., individual firm, and macro, i.e., global, levels, even when specific global sustainability symptoms and metrics are not yet well understood or even known. Whereas the PBA seeks to estimate how far the biosphere can be driven away from a "normal" or "natural" state before tipping points are reached, because of ongoing violations of basic sustainability principles, the FSSD allows for individual planners to move systematically toward sustainability before all impacts from not doing so, or their respective tipping points, are known. Critical weaknesses in the PBA can, thus, be overcome by a combined approach, significantly increasing both the applicability and efficacy of the PBA, as well as informing strategies developed in line with the FSSD, e.g., by providing a "global warning system" to help prioritize strategic actions highlighted by the FSSD. Thus, although ongoing monitoring of known and suspected global sustainability metrics and their possible tipping points is a critical part of the evolving sustainability landscape, effective and timely utilization of planetary-boundary information on multiple scales requires coupling to a strategic approach that makes the underlying sustainability principles explicit and includes strategic guidelines to approach them. Outside of such a rigorous and systems-based context, the PBA, even given its global scale, risks leading individual organizations or planners to (i) focus on "shares" of, e.g., pollution within the PBs and negotiations to get as high proportion of such as possible, and/or (ii) awaiting data on PBs when such do not yet exist before they act, and/or (iii) find it difficult to manage uncertainties of the data once such have arrived. If global sustainability problems are to be solved, it is important that each actor recognizes the benefits, not the least self-benefits, of designing and executing strategies toward a principled and scientifically robust definition of sustainability. This claim is not only based on theoretical reasoning. A growing number of sectors, businesses, and municipalities/cities around the world are already doing it, i.e., not estimating "allowed" shares of, say fossil CO2 emissions, but gradually moving away from unsustainable use of fossil fuels and other unsustainable practices altogether.

  • 71.
    Robèrt, Karl-Henrik
    et al.
    Blekinge Institute of Technology, School of Engineering, Department of Strategic Sustainable Development.
    Göran, Broman
    Blekinge Institute of Technology, School of Engineering, Department of Strategic Sustainable Development.
    Ny, Henrik
    Blekinge Institute of Technology, School of Engineering, Department of Strategic Sustainable Development.
    Byggeth, Sophie
    Blekinge Institute of Technology, School of Engineering, Department of Strategic Sustainable Development.
    Missimer, Merlina
    Blekinge Institute of Technology, School of Engineering, Department of Strategic Sustainable Development.
    Connel, Tamara
    Blekinge Institute of Technology, School of Engineering, Department of Strategic Sustainable Development.
    Moore, Brendan
    Blekinge Institute of Technology, School of Engineering, Department of Strategic Sustainable Development.
    Waldron, David
    Cook, David
    Oldmark, Jonas
    Sustainability Handbook2012Book (Other academic)
    Abstract [en]

    Today"s society is faced with a multitude of compounding and inter-related socio-ecological challenges. In order to adequately navigate this 'sustainability challenge" and to capture the innovation opportunities that come with it, we need professionals from all sectors of society who can help plan, act, and lead strategically towards sustainability. Sustainability handbook first outlines a structured approach to planning within this complex challenge, which is known as the Framework for Strategic Sustainable Development. It provides the readers with fundamental social and ecological knowledge from which a scientifically-derived definition of sustainability has been established. From there, the book shares examples of how this Framework can be applied in a variety of situations, sectors, and scales and points to the self-benefit for companies, municipalities and other organizations of working strategically for sustainability. The readers are left with a solid understanding of how to define sustainability, how to plan and act towards it, and how to select from the vast array of sustainability-related concepts, methods and tools in the field today. Sustainability handbook combines the academic and practical experience from a collection of authors. The content has been used, tested and refined over many iterations, and now serves as a primary resource for academic courses and programmes around the world. Any student or practitioner looking for more clarity on how to strategically plan and act towards sustainability in a structured, scientific, and collaborative manner will find value inside. Because of the generic nature of the Framework for Strategic Sustainable Development, it can be useful for any discipline, from engineering, to product-service innovation, to business management, to urban and regional planning, and beyond.

  • 72. Sidenmark, Mikael
    et al.
    Josefsson, Andreas
    Berghuvud, Ansel
    Broman, Göran
    The Ocean Harvester: Modelling, Simulation & Experimental Validation2009Conference paper (Refereed)
    Abstract [en]

    Among the significant difficulties of developing commercially viable wave power has been survivability in storm conditions and achieving high capacity factors. The oscillating wave motion, constantly changing wave-size, and extreme energy levels during storm conditions often lead to difficulties in reaching high capacity factors, keeping the system complexity down and avoiding over dimensioning. The Ocean Harvester is based on an innovation addressing these issues. What is unique with this concept is the way a counterweight is used to achieve a limited load on the generator and thereby a levelled power output that can be controlled to match the average level of incoming wave energy. These characteristics enable an exceptionally high capacity factor, excellent survivability and low system complexity, which altogether may lead to low capital- and O&M costs. This paper presents the working principle of the novel concept and introductory coordinated theoretical and experimental investigations of performance characteristics. Theoretical and experimental results agree very well and further simulations with the verified model using real wave data clearly show the advantage of the proposed concept. A high capacity factor is proven and the design obviously only requires existing types of components, making cost-efficient wave energy conversion feasible.

  • 73. Thompson, Anthony
    et al.
    Larsson, Tobias
    Broman, Göran
    Towards Sustainability-driven Innovation through Product-Service Systems2011Conference paper (Refereed)
    Abstract [en]

    Many current sustainability considerations in industry constrain design space by emphasizing reduced material and energy flows across product life cycles. However, there are also opportunities for sustainability awareness to extend design space and drive innovation. Product-service systems (PSS) in particular can be a vehicle through which sustainability-driven innovation occurs. A framework for strategic sustainable development, including a backcasting approach, provides the basis for understanding sustainability in this work and provides insight into how incremental and radical approaches could be aligned within product innovation. This work explores how sustainability considerations can be better integrated into existing product innovation working environments, with an emphasis on opportunities that occur as sustainability knowledge leads to innovation through a product-service system approach. It is demonstrated and ideas are discussed around how sustainability can be used to drive innovation processes through product-service systems that companies rely upon, while also supporting global society’s movement toward sustainability.

  • 74.
    Thompson, Anthony
    et al.
    Blekinge Institute of Technology, School of Engineering, Department of Mechanical Engineering.
    Larsson, Tobias
    Blekinge Institute of Technology, School of Engineering, Department of Mechanical Engineering.
    Broman, Göran
    Blekinge Institute of Technology, School of Engineering, Department of Strategic Sustainable Development.
    Towards sustainability-driven innovation through product-service systems2011Conference paper (Refereed)
    Abstract [en]

    Many current sustainability considerations in industry constrain design space by emphasizing reduced material and energy flows across product life cycles. However, there are also opportunities for sustainability awareness to extend design space and drive innovation. Product-service systems (PSS) in particular can be a vehicle through which sustainability-driven innovation occurs. A framework for strategic sustainable development, including a backcasting approach, provides the basis for understanding sustainability in this work and provides insight into how incremental and radical approaches could be aligned within product innovation. This work explores how sustainability considerations can be better integrated into existing product innovation working environments, with an emphasis on opportunities that occur as sustainability knowledge leads to innovation through a product-service system approach. It is demonstrated and ideas are discussed around how sustainability can be used to drive innovation processes through product-service systems that companies rely upon, while also supporting global society’s movement toward sustainability.

  • 75. Thompson, Anthony
    et al.
    Lindahl, Pia
    Hallstedt, Sophie
    Ny, Henrik
    Broman, Göran
    Decision Support Tools for Sustainability in Product Innovation in a Few Swedish Companies2011Conference paper (Refereed)
    Abstract [en]

    Companies are finding that customers increasingly demand “sustainable products” while also noticing economic benefits from eco-efficiency and other sustainability-related design approaches. Employees making product-related decisions need support tools to incorporate sustainability considerations — both at strategic (e.g. regarding product lines to develop) and operational levels (e.g. detailed design). This paper presents the results from a set of interviews that explored where and how sustainability considerations are taken into account in the product innovation processes of six Swedish companies. Results are presented as a map of the overall company operations in relation to a generic product innovation model, followed by a map of the places where sustainability considerations are made in that model. Some of the tools that are used to support those sustainability considerations are also briefly described. The conclusion is that there are some, but not sufficient, tools and methods to support inclusion of sustainability aspects in the product innovation processes of these companies.

  • 76. Thompson, Anthony
    et al.
    Ny, Henrik
    Lindahl, Pia
    Broman, Göran
    Severinsson, Mikael
    Benefits of a Product Service System Approach for Long-life Products: The Case of Light Tubes2010Conference paper (Refereed)
    Abstract [en]

    Products designed for long-life often have significant potential for better sustainability performance than standard products due to less material and energy usage for a given service provided, which usually also results in a lower total cost. These benefits are not always obvious or appealing to customers, who often focus on price. Long-life products are therefore at an inherent disadvantage: due to lower volume of sales that results from the products’ longer-life, the margins (price) often need to be higher. In this paper, we demonstrate that when the revenue base is shifted to be the service of light (instead of the sales of light tubes), there is an opportunity for a “win-win-win” for the light user, the long-life light provider and society. Through a product-service system approach, resulting in a well-communicated total offer, the full array of benefits becomes clearer to the customer, including that they avoid the high initial cost.

  • 77. Trygg, Louise
    et al.
    Broman, Göran
    Blekinge Institute of Technology, School of Engineering, Department of Strategic Sustainable Development.
    França, Cesar-Levy
    Blekinge Institute of Technology, School of Engineering, Department of Strategic Sustainable Development.
    District Heating and CHP: A Vital Role for the Development towards a Sustainable Society?2012In: Latest trends in sustainable and green deveopment - Proceedings of the 3rd International Conference on Urban Sustainability, Cultural Sustainability, Green Development, Green Structures and Clean Cars (USCUDAR 12), WSEAS Press , 2012, p. 157-167Conference paper (Refereed)
    Abstract [en]

    In Sweden, district heating (DH) is quite well developed and is already mainly based on non-fossil fuels. Increased use of DH is therefore considered as a way of phasing out fossil energy for heating purposes. Furthermore, increased use of DH provides an increased basis for combined heat and power production (CHP). Considering that coal condensing is the marginal production of electricity in Europe, increased use of bio-fueled CHP leads to even greater reductions of global carbon dioxide (CO2) emissions. However, in a sustainable society, where there is no longer a systematic increase of CO2 (and no other sustainability problems), the benefits of DH are less obvious. The aim of this work is to explore the impact of DH and CHP in the development towards such a society. A local energy system is studied for five different time periods from 2010 to 2060 with different marginal technologies for electricity production. Results show that when the local energy utility co-operate with a local industry plant and invests in a new CHP plant for waste incineration the global CO2 emissions for the whole studied time period will be reduced with about 48 000 tonnes, which corresponds to over 100 % of the emissions from today’s system for the same time period. When considering that bio fuel is a scarce resource, and that the amount of CO2 emission linked to waste probably will be lower in sustainable society, the global CO2 emissions will be about 250% lower compared to the system of today. The studied DH related cooperation and introduction of CHP will reduce the system cost for the whole studied energy system with 2 500 MSEK for the studied period. In general, the results indicate that the modeled measures will not have any major advantages over other heating technologies in a sustainable society but that it can play a vital role for the development towards such a society.

  • 78.
    Waldron, David
    et al.
    Blekinge Institute of Technology, School of Engineering, Department of Strategic Sustainable Development.
    Hallstedt, Sophie
    Blekinge Institute of Technology, School of Engineering, Department of Strategic Sustainable Development.
    Ny, Henrik
    Blekinge Institute of Technology, School of Engineering, Department of Strategic Sustainable Development.
    Broman, Göran
    Blekinge Institute of Technology, School of Engineering, Department of Strategic Sustainable Development.
    Robèrt, Karl-Henrik
    Blekinge Institute of Technology, School of Engineering, Department of Strategic Sustainable Development.
    Structured Comprehension for Systems Thinking, Learning and Leadership towards Sustainability2004Conference paper (Other academic)
    Abstract [en]

    The Blekinge Institute of Technology (BTH) Karlskrona, Sweden, will begin a new Master’s programme focusing on sustainable development in September 2004. The programme is intended to contribute to a growing international network of sustainability practitioners, including early and mid-career professionals, resource managers, executives and political decision-makers. As with many programmes of this type, this one will require coverage of numerous complex economic, social and ecological issues. In so doing, it will cover a number of interrelated disciplines concepts and tools (e.g. environmental science, system dynamics, public policy, business strategies, corporate social responsibility, dematerialization and ‘green technologies’). Various sectors of the sustainability arena will also be studied including agriculture, transportation, health, energy and product development. To deal with the high complexity inherent in sustainable development, we intend to test the enhanced learning capabilities of three unique and interrelated aspects of this Master’s programme including: (1) a structured comprehension of sustainable development, using “Backcasting from Basic Socio-Ecological Principles of Sustainability”; (2) free creativity within basic constraints established by the structured comprehension and (3) a learning process that ‘walks the talk’ with respect to free creativity within basic constraints. Recognizing that “society within the biosphere” is inherently a complex system, the programme will revolve around a generic, structured model for planning and decisionmaking in any complex system. The model is adaptable to any system at any scale – e.g. an organization, a football game, and in this case, “society in the biosphere”. The programme distinguishes five essential system levels including: (i) the system; (ii) success; (iii) strategy; (iv) actions and (v) tools. Second, a structured comprehension, anchored to basic principles at the success level – the ‘trunk and branches of sustainability’ – allows for and promotes free creativity on actions in a particular context – the ‘leaves’. Third, the students will be exposed to a learning process of creative use of actions and tools that the model allows for in any organization – sharing the basic trunk and branches and practicing free creativity amongst the leaves. The programme’s learning process will facilitate a systematic approach to analysis of all kinds of current sectors and problem areas through envisioning of solutions and finding strategic paths of actions and tools towards sustainable outcomes within those sectors. It will culminate in a thesis, following the same general structure, during the last-half of the programme.

  • 79. Wall, Johan
    et al.
    Englund, Thomas
    Ahlin, Kjell
    Broman, Göran
    Influence of a bellows-type flexible joint on exhaust system dynamics2004In: Proceedings of the Institution of mechanical engineers. Part D, journal of automobile engineering, ISSN 0954-4070, E-ISSN 2041-2991, Vol. 218, no 12, p. 1473-1478Article in journal (Refereed)
    Abstract [en]

    Most modern cars have a bellows-type flexible joint between the manifold and the catalytic converter to allow for thermal expansion and to decouple large engine movements and vibrations from the rest of the exhaust system. To obtain better understanding of the influence of this joint, the dynamic response of a typical exhaust system is studied when excited via different joint configurations. Measurements show the great order of reduction of vibration transmission to the exhaust system that a bellows joint, with and without an inside liner, gives in comparison with a stiff joint. For the combined bellows and liner joint vibration transmission is however higher than for the bellows alone. Together with some other aspects this makes the choice of including a liner in the exhaust system application complex. For a system in general the possibility of tuning the friction limit of the liner, to minimise overall vibrations through friction based damping, depends on how close to ideal the excitation source is and its location. Anyhow, the combined bellows and liner joint makes the exhaust system behaviour significantly non-linear, whereas the system behaviour proves to be essentially linear when the bellows has no liner, which imply that the liner needs to be included in theoretical models when present in the real system.

  • 80. Wall, Johan
    et al.
    Englund, Thomas
    Ahlin, Kjell
    Broman, Göran
    Modelling of multi-ply bellows flexible joints of variable mean radius2003Conference paper (Refereed)
    Abstract [en]

    Bellows flexible joints are included in automobile exhaust systems to allow for engine movements and thermal expansion and to reduce vibration transmission. Generally the joint consists of a flexible bellows, an inside liner and an outside braid. In this work the bellows is considered. A straightforward way to model the bellows is to use shell finite elements. Due to the convoluted geometry of the bellows that procedure requires however a high number of elements, meaning that the bellows model would constitute a large part of the model of the exhaust system. For more effective dynamics simulations a beam finite element representation of the bellows has been presented in a prior work. This modelling procedure was implemented in the commercial software I-DEAS and was verified against experimental results available in the literature for single-ply bellows of constant mean radius. This paper suggests adjustments by which this procedure can be extended to model also multi-ply bellows of variable mean radius. Experimental investigations of a double-ply bellows having decreasing mean radius towards its ends are included for verification. The agreement between theoretical and experimental results is very good, implying that the suggested extension of the modelling procedure is valid. It is also shown that the procedure can easily be implemented into other commercial software (in this case ABAQUS). The experimental investigation reveals an intriguing resonance frequency shift at small excitation force levels. Although considered to be of minor significance for the present application of the bellows, a hypothetic qualitative explanation to the observed phenomenon is given.

  • 81.
    Zetterlund, Helena
    et al.
    Blekinge Institute of Technology, Faculty of Engineering, Department of Strategic Sustainable Development.
    Hallstedt, Sophie
    Blekinge Institute of Technology, Faculty of Engineering, Department of Strategic Sustainable Development.
    Broman, Göran
    Blekinge Institute of Technology, Faculty of Engineering, Department of Strategic Sustainable Development.
    Implementation Potential of Sustainability-oriented Decision Support in Product Development2016In: 26TH CIRP DESIGN CONFERENCE / [ed] Wang, L; Kjellberg, T, Elsevier, 2016, p. 287-292Conference paper (Refereed)
    Abstract [en]

    This study aims to identify challenges and opportunities for implementation of sustainability-oriented decision support in product development. A literature review and interviews with field experts were performed. Most methods/tools designed to support sustainability considerations in product development have a low level of implementation. A lack of the full scope of sustainability and poor practical applicability might be reasons. Implementation could be improved by amending these deficiencies. Another opportunity is to integrate sustainability aspects in methods/tools that are often already implemented in companies. A low-hanging fruit can be to focus on the area of risk management together with defining sustainability criteria.

12 51 - 81 of 81
CiteExportLink to result list
Permanent link
Cite
Citation style
  • apa
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf