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  • 1.
    André, Samuel
    et al.
    Jönköping University, School of Engineering, JTH, Industrial Product Development, Production and Design.
    Lennartsson, Martin
    Jönköping University, School of Engineering, JTH, Civil Engineering and Lighting Science.
    Elgh, Fredrik
    Jönköping University, School of Engineering, JTH, Industrial Product Development, Production and Design.
    Exploring the design platform in industrialized housing for efficient design and production of customized houses2019In: Transdisciplinary engineering for complex socio-technical systems: Proceedings of the 26th ISTE International Conference on Transdisciplinary Engineering, July 30 – August 1, 2019 / [ed] K. Hiekata, B. Moser, M. Inoue, J. Stjepandić & N. Wognum, Amsterdam: IOS Press, 2019, p. 125-134Conference paper (Refereed)
    Abstract [en]

    Industrialized house-building (IHB) is a sector offering unique products by adopting an engineer-to-order (ETO) strategy. Customer satisfaction is achieved by adaptation of product solutions and the fast-paced introduction of new technology in combination with short lead-times and cost-efficient production. Product platforms is acknowledged as a strategic enabler for mass customization and increased competitiveness. The strategy has been a necessity in the mechanical industry for several decades. However, for IHB, platforms have only gained interest in recent years. In general, ETO companies struggle with adopting the common product platform approach, set by pre-defined modules and components. Predefinitions require standardization of the product offer which reduces the customization ability which is regarded as a competitive edge. The Design Platform (DP) approach was developed aimed to support ETO companies by utilizing different types of engineering assets in a coherent transdisciplinary model enabling efficient customization. The long-term aim of this work is to investigate and support the DP applicability in IHB to increase efficiency in development and delivery. For this article, data were gathered from a single case study, including workshops with company representatives combined with interviews and document analysis. Based on the data analysis, engineering assets were identified and characterized. Further, a conceptual PLM solution is proposed and outlined to support the DP application combined with the assets. The results suggest that a PLM system can host parts of the DP and that it is applicable in IHB.

  • 2.
    André, Samuel
    et al.
    Jönköping University, School of Engineering, JTH, Industrial Product Development, Production and Design.
    Lennartsson, Martin
    Jönköping University, School of Engineering, JTH, Civil Engineeering and Lighting Science.
    Elgh, Fredrik
    Jönköping University, School of Engineering, JTH, Industrial Product Development, Production and Design.
    PLM support for the Design Platform in industrialized housing for efficient design and production of customized housesManuscript (preprint) (Other academic)
  • 3.
    Areth Koroth, Rohith
    et al.
    Jönköping University, School of Engineering, JTH, Industrial Product Development, Production and Design, JTH, Product design and development (PDD).
    Elgh, Fredrik
    Jönköping University, School of Engineering, JTH, Industrial Product Development, Production and Design, JTH, Product design and development (PDD).
    Lennartsson, Martin
    Jönköping University, School of Engineering, JTH, Industrial Product Development, Production and Design, JTH, Product design and development (PDD).
    Raudberget, Dag
    Jönköping University, School of Engineering, JTH, Industrial Product Development, Production and Design, JTH, Production development. Jönköping University, School of Engineering, JTH, Industrial Product Development, Production and Design, JTH, Product design and development (PDD).
    A method to capture and share production requirements supporting a collaborative production preparation process2023In: Proceedings of the Design Society: ICED23, Volume 3 - July 2023, Cambridge: Cambridge University Press, 2023, Vol. 3, p. 273-282Conference paper (Refereed)
    Abstract [en]

    The production preparation process (3P) enables collaboration between design and production engineers during product development but its efficiency is limited by the abundance of documentation of manufacturing constraints and capabilities. Empirical studies showed that use of production requirements can increase the efficiency of 3P, however, the support for production engineers to capture and share production requirements is scarce. A method to support production engineers in identifying, defining, structuring and sharing production requirements and collaborating with design engineers is presented. The method has three major parts - focus areas and requirement categories, a worksheet for production requirements capturing and prioritization, and a workflow for using the worksheet. The method was developed in collaboration with practitioners and contributes to the existing knowledge by providing production engineers with a structured way of working with production requirements. Evaluation of the method in the case company showed its usability when developing product variants and that additional work is needed to support the development of new product families and assembly lines.

  • 4.
    Areth Koroth, Rohith
    et al.
    Jönköping University, School of Engineering, JTH, Industrial Product Development, Production and Design, JTH, Product design and development (PDD).
    Elgh, Fredrik
    Jönköping University, School of Engineering, JTH, Industrial Product Development, Production and Design, JTH, Product design and development (PDD).
    Lennartsson, Martin
    Jönköping University, School of Engineering, JTH, Industrial Product Development, Production and Design, JTH, Product design and development (PDD).
    Raudberget, Dag
    Jönköping University, School of Engineering, JTH, Industrial Product Development, Production and Design, JTH, Production development. Jönköping University, School of Engineering, JTH, Industrial Product Development, Production and Design, JTH, Product design and development (PDD).
    Aligning Production Requirements with Product and Production Maturities: Enhancing Production Preparation during Product DevelopmentManuscript (preprint) (Other academic)
  • 5.
    Areth Koroth, Rohith
    et al.
    Jönköping University, School of Engineering, JTH, Industrial Product Development, Production and Design, JTH, Product design and development (PDD).
    Elgh, Fredrik
    Jönköping University, School of Engineering, JTH, Industrial Product Development, Production and Design, JTH, Product design and development (PDD).
    Lennartsson, Martin
    Jönköping University, School of Engineering, JTH, Industrial Product Development, Production and Design, JTH, Product design and development (PDD).
    Raudberget, Dag
    Jönköping University, School of Engineering, JTH, Industrial Product Development, Production and Design, JTH, Production development. Jönköping University, School of Engineering, JTH, Industrial Product Development, Production and Design, JTH, Product design and development (PDD).
    Design for Producibility: A Case Study on Theory, Practice and Gaps2022In: Transdisciplinarity and the Future of Engineering: Proceedings of the 29th ISTE International Conference on Transdisciplinary Engineering (TE2022) / [ed] B. R. Moser, P. Koomsap & J. Stjepandić, Amsterdam: IOS Press, 2022, p. 134-143Conference paper (Refereed)
    Abstract [en]

    Changing customer requirements, regulations, technology and regulations, shift to automated assembly and product variety are common challenges faced by many manufacturing industries and alignment between product and production system is critical for business success. Design engineers should be aware of production constraints and capabilities to ensure efficient manufacture and assembly of products that are developed. This requires different and detailed support to guide the work, evaluate different design solutions, enable continuous and concurrent work with design for producibility and production preparation. A study was conducted in three companies to understand alignment and integration of product development and production preparation processes. Also, utilization of production requirements, design for manufacture and assembly (DFMA) and failure modes and effect analysis (FMEA) to support design for producibility (DFP) was studied. Currently, production preparation is done through discussions between design and production engineers. Production preparation and work with DFMA and FMEA is skill and experience dependent. Definition, structuring and sharing of production requirements on different system levels, from production and product perspectives are identified as critical to supporting design for producibility and production preparation. The work with FMEA and DFMA can be developed and improved with systematic and structured way of working with production requirements.

  • 6.
    Areth Koroth, Rohith
    et al.
    Jönköping University, School of Engineering, JTH, Industrial Product Development, Production and Design, JTH, Product design and development (PDD).
    Lennartsson, Martin
    Jönköping University, School of Engineering, JTH, Civil Engineering and Lighting Science.
    Raudberget, Dag
    Jönköping University, School of Engineering, JTH, Industrial Product Development, Production and Design, JTH, Produktionsutveckling. Jönköping University, School of Engineering, JTH, Industrial Product Development, Production and Design, JTH, Product design and development (PDD).
    Elgh, Fredrik
    Jönköping University, School of Engineering, JTH, Industrial Product Development, Production and Design, JTH, Product design and development (PDD).
    Product Platforms and Production: Current State and Future Research Directions Targeting Producibility and Production Preparation2021In: Transdisciplinary Engineering for Resilience: Responding to System Disruptions: Proceedings of the 28th ISTE International Conference on Transdisciplinary Engineering (TE2021) / [ed] L. Newnes, S. Lattanzio, B. R. Moser, J. Stjepandić & N. Wognum, Amsterdam: IOS Press, 2021, p. 332-341Conference paper (Refereed)
    Abstract [en]

    New business opportunities are created when the advantage of changeable manufacturing systems expand beyond increased freedom in production location to increased freedom in product design. However, there are new challenges to overcome, including improved ability to design and adapt products when requirements from stakeholders quickly change and/or new technology rapidly evolves. Simultaneously, the producibility of each design must be ensured while keeping the lead-time of the whole process to the minimum. Changeable product platforms (both flexible and adaptable platforms) are gaining attention in both research and industry. However, the level of alignment and integration of product development and production is critical for the efficiency of the product realization process. In this study, we map the state of practice in five companies with an initial literature review. The companies had no formal platform strategy and faced challenges with variant management and development time, had manual processes for production preparation and reuse of technical solutions and knowledge happened through components and documents. The production preparation and reuse were dependent on the engineer’s competence. Future work will concentrate on identifying how manufacturing inputs can be added as a design asset in a changeable product platform to enhance producibility and production preparation.

  • 7.
    Bosch, Petra
    et al.
    Chalmers University of Technology.
    Isaksson, Anders
    Chalmers University of Technology.
    Lennartsson, Martin
    Jönköping University, School of Engineering, JTH, Civil Engineeering and Lighting Science.
    Linderoth, Henrik
    Jönköping University, School of Engineering, JTH, Civil Engineeering and Lighting Science.
    Hinder och drivkrafter för BIM i medelstora entreprenadföretag. SBUF-rapport 130692016Report (Other academic)
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  • 8.
    Bosch-Sijtsema, Petra
    et al.
    Department of Architecture and Civil Engineering, division Construction Management, Chalmers University of Technology, Gothenburg, Sweden.
    Isaksson, Anders
    Department of Technology Management and Economics, division of Innovation and R&D Management, Chalmers University of Technology, Gothenburg, Sweden.
    Lennartsson, Martin
    Jönköping University, School of Engineering, JTH, Civil Engineeering and Lighting Science.
    Linderoth, Henrik
    Jönköping University, School of Engineering, JTH, Civil Engineeering and Lighting Science.
    Barriers and facilitators for BIM use among Swedish medium-sized contractors: We wait until someone tells us to use it2017In: Visualization in Engineering, ISSN 2213-7459, Vol. 5, no 3, p. 1-12Article in journal (Refereed)
    Abstract [en]

    Background: The pace of diffusion of BIM (Building Information Modelling) use is considered to increase with governmentalinitiatives in which public clients in countries like Finland, Singapore, United Kingdom, and Sweden begin requiring BIM as apart of the project delivery. Currently, larger contractor firms use BIM to a certain extent. However, BIM use by mid-sizedcontractor firms (that is, firms with 50–500 employees that can successfully compete with larger contractors on projects costinga maximum of 50 million Euros) is relatively unknown. Hence, the aim of the paper is to explore current use and perceivedconstraints and driving forces of BIM-implementation with respect to mid-sized contractors.

    Methods: A mixed method approach was applied, and data was collected through an interview study and a survey involvingchief executive officers or their closest sub-ordinates in mid-sized contractor firms in Sweden. The survey was based on atechnology-, organization-, and environment framework that is used in information systems research to study the use of inter-organizational information systems. The total population of firms in the survey corresponded to 104. The study presented thepreliminary results based on 32 answers (with a 31% response rate).

    Results: Fifty-eight percent of the surveyed respondents stated that they had been involved in a project in which BIM wasused in some manner. The most commonly used application included visualization, which also facilitates coordination andcommunication. The biggest perceived constraints involved partners that did not use BIM, lack of demand from clients, andthe absence of internal demand in the company. With respect tothe two last obstacles, significant differences existedbetween users and non-users. The most common perceived driving forces included the fact that BIM is perceived as ameans to follow technical development and that BIMprovides competitive advantages to the company.

    Conclusions: It is concluded that the main driver responsible for BIM-implementation is mainly determined by anindividual’s subjective positive or negative evaluation of BIM, instead of external pressure from clients and partners or by theinternal capacity and knowledge to use BIM.

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  • 9.
    Bäckstrand, Jenny
    et al.
    Jönköping University, School of Engineering, JTH, Supply Chain and Operations Management.
    Lennartsson, Martin
    Jönköping University, School of Engineering, JTH, Civil Engineeering and Lighting Science.
    Customizations vs. Platforms: A Conceptual Approach to COSI2018In: Advances in Production Management Systems. Production Management for Data-Driven, Intelligent, Collaborative, and Sustainable Manufacturing. APMS 2018. / [ed] I. Moon, G. Lee, J. Park, D. Kiritsis & G. von Cieminski, Cham: Springer, 2018, p. 116-123Conference paper (Refereed)
    Abstract [en]

    In recent years, many manufacturers have experienced an increased demand for customized products and services, which requires the manufacturer to simultaneously offer both standardized and customized products. Consequently, several manufacturing strategies must be efficiently employed. These companies do not express the same prerequisites as ‘pure’ ETO companies since they need to be able to differentiate customized orders from standard orders, but also be able to differentiate between the manufacturing dimension and the engineering dimension of customization. Whereas standard orders can be processed with a platform approach, the customized orders contain specific requirements and information represented by ‘customer-order specific information’ (COSI). This paper defines and presents competitive scenarios where platform constraints are combined with COSI for efficient customizations. Implications for the approach and a path forward is discussed.

  • 10.
    De Goey, Heleen
    et al.
    Jönköping University, School of Engineering, JTH. Research area Built Environment.
    Engström, Dan
    Swerea IVF.
    Lennartsson, Martin
    Jönköping University, School of Engineering, JTH. Research area Built Environment.
    Linderoth, Henrik
    Jönköping University, School of Engineering, JTH. Research area Built Environment.
    Design Thinking as Facilitator for Sustainable Innovation: Exploring Opportunities at SMEs in the Swedish Wood Products Industry2015Conference paper (Refereed)
    Abstract [en]

    Design thinking (DT) is the application of design practice as an approach to innovate and initiate change. Recently, DT has received increasing attention as an approach to address sustainability challenges. However, this area is less studied. The purpose of this study was to explore how DT could enable small and medium-sized enterprises (SMEs) in the Swedish wood products industry to create more sustainable offers. Various actors from this industry have identified the need to develop sustainable offers, although few discuss how this is realized. Interviews have been conducted with six SMEs to increase understanding on challenges they perceive with developing sustainable products. Current practice is compared to potential benefits of DT described in literature. Three main benefits of DT for SMEs have been identified. It could enable SMEs [1] to redefine the purpose of their offers, [2] to better address needs and [3] to address conflicting requirements regarding sustainability.

  • 11.
    Elgh, Fredrik
    et al.
    Jönköping University, School of Engineering, JTH, Industrial Product Development, Production and Design.
    Johansson, Joel
    Jönköping University, School of Engineering, JTH, Industrial Product Development, Production and Design.
    Stolt, Roland
    Jönköping University, School of Engineering, JTH, Industrial Product Development, Production and Design.
    Lennartsson, Martin
    Jönköping University, School of Engineering, JTH, Civil Engineeering and Lighting Science.
    Heikkinen, Tim
    Jönköping University, School of Engineering, JTH, Industrial Product Development, Production and Design.
    Raudberget, Dag
    Jönköping University, School of Engineering, JTH, Industrial Product Development, Production and Design.
    Platform Models for Agile Customization – What's Beyond Modularization?2018In: Transdisciplinary Engineering Methods for Social Innovation of Industry 4.0: Proceedings of the 25th ISPE Inc. International Conference on Transdisciplinary Engineering / [ed] Margherita Peruzzini, Marcello Pellicciari, Cees Bil, Josip Stjepandić, Nel Wognum, IOS Press, 2018, p. 371-380Conference paper (Refereed)
    Abstract [en]

    Many manufacturing companies are suppliers that deliver unique solutions to different business customers. Intense quotation work, with a high demand on accuracy and quick response, and development projects executed in close collaboration with customers and other actors characterize these companies. The projects can run for years or a few weeks depending on the business. Changes of requirements are frequent and technology development required for improved functionality, sustainability and competitiveness. The use of a product platform has been acknowledged as a strategic enabler for product family development and mass customization. However, companies struggle with adopting the common platform approach building upon pre-defined modules and components as it constraints the fulfilment of unique customer requirements and the introduction of new technology at high pace. This work reports the results from case studies conducted in collaboration with four companies. They are in many ways different but face the same challenges when it comes to customization, fluctuating requirements and need of high pace in technology advancement. The focus of this paper is on their initial states; including how they work with their product concept before the customer entry point, the work that is initiated when an order is accepted, the character of requirements and the adoption of product platforms. Criteria on, and identification of, new platforms models, termed Design Assets, are presented followed by a mapping to the Design Platform concept pointing out areas upcoming work, both scientifically and at the companies.

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  • 12.
    Isaksson, Anders
    et al.
    Chalmers.
    Linderoth, Henrik
    Jönköping University, School of Engineering, JTH, Civil Engineeering and Lighting Science.
    Bosch, Petra
    Chalmers.
    Lennartsson, Martin
    Jönköping University, School of Engineering, JTH, Civil Engineeering and Lighting Science.
    BIM use in the production process among medium sized contractors: A survey of Swedish medium sized contractors2016Conference paper (Refereed)
    Abstract [en]

    Building Information Modelling (BIM) is claimed to transform the AEC industry, whereas current research has argued that diffusion of BIM use proceeds at a slower rate than the optimistic predictions. However, governmental initiatives where public clients in countries like Finland, Singapore, United Kingdom and Sweden start to require a Building Information Model as a part of the project delivery, are supposed to increase the pace of diffusion of BIM use. Today, larger contractor firms use BIM to a varying extent. But BIM use in mid-sized contractor firms, with 50 – 500 employees, which successfully can compete with larger contractors on projects up to 50 million Euros, is relatively unknown. The aim of the paper is to explore the current use and perceived challenges and driving forces of BIM-implementation among mid-sized contractors. The data used in this study is collected through a survey send to chief executive officers, or their closest sub-ordinates, of mid-sized construction firms in Sweden. The survey is based on a technology-, organization-, environment framework that is used in information systems research in order to study the use of inter-organizational information systems. The total population of firms in the survey is 136. The preliminary results presented in this paper are based on 31 answers (30 percent response rate). 58 percent of the respondents said that they have been involved in a project where BIM has been used in some way. The most commonly used application is visualization. The highest obstacles perceived are that partners are not using BIM, there is no demand from clients, and there is no internal demand in the company. For the two last obstacles there were significant differences between users and non-users. The most common perceived driving forces were that BIM is a means for following the technical development and BIM can give the company competitive advantages. Moreover, the results indicate that the main driver behind BIM-implementation is mainly determined by an individual’s subjective positive or negative evaluation of BIM, rather than by external pressure from clients and partners, or by internal capacity and knowledge to use BIM.

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  • 13. Jansson, Gustav
    et al.
    Mukkavaara, Jani
    Elgh, Fredrik
    Jönköping University, School of Engineering, JTH, Industrial Product Development, Production and Design.
    Lennartsson, Martin
    Jönköping University, School of Engineering, JTH, Civil Engineering and Lighting Science.
    Breakdown Structure in the Digitalization of Design Work for Industrialized House-Building: A Case Study of Systems Building Using Predefinition Levels of Product Platforms2019In: ICCREM 2019: Innovative Construction Project Management and Construction Industrialization / [ed] Yaowu Wang, Ph.D., Mohamed Al-Hussein, Ph.D., and Geoffrey Q. P. Shen, Ph.D., American Society of Civil Engineers (ASCE), 2019, p. 49-57Conference paper (Refereed)
    Abstract [en]

    Industrialized house-building companies predefine parameters in platforms. In the strive to identify efficient information flow with automation and configuration, the design process requires a breakdown of the product structure of a building to digitally communicate between information systems. The level of predefinitions varies between industrialized house-builders according to market position, type of building processes, and maturity in business. The client decoupling point according to the predefinitions of house-building as a product is central for how and when production information is created. Bill of materials is a breakdown structure that visualize relations and the transformation between engineering, preparation, and production processes from a life cycle perspective. A case study at eight house-building companies was chosen with the aim to identify relations between the level of predefinitions and breakdown structures. House-building platforms with a high level of predefinition on layouts, components, and interfaces show a tendency to use less time in BIM-tools for engineering work and a high level of parameters in manufacturing configuration systems to prepare for production. Meanwhile, the opposite with low levels of predefinitions on components and interfaces focus on BIM-tools for engineering work with longer lead times. An interesting outcome is those with a high level of predefinitions in interfaces but lower levels on component dimensions. These companies have the ability to position their offer to a wide market with flexibility in the engineering work and need to communicate the high levels of interface parameters for the manufacturing sequence with a breakdown of the product together with architects.

  • 14.
    Käkelä, Nikolas
    et al.
    Jönköping University, School of Engineering, JTH, Supply Chain and Operations Management.
    Engström, Annika
    Jönköping University, School of Engineering, JTH, Supply Chain and Operations Management.
    Lennartsson, Martin
    Jönköping University, School of Engineering, JTH, Civil Engineering and Lighting Science.
    Bäckstrand, Jenny
    Jönköping University, School of Engineering, JTH, Supply Chain and Operations Management.
    Viskleken: Samlade lärdomar från ett kollaborativt forskningsprojekt2020Report (Other academic)
    Abstract [sv]

    Allt fler företag upplever krav på kundanpassning av produkter och för att få nöjda kunder är det en förutsättning att förstå vad kunder verkligen vill ha. Kundanpassade produkter förknippas ofta med små serier och kundens beställningar innehåller specifik information för varje order. Denna information inkluderar när, var, och vad kunden vill ha.

    I Viskleken har fokus främst varit på företag som tar kundanpassning till sin spets och konstruerar och tillverkar produkter helt enligt enskilda kunders behov. Produkten tas således fram enbart för den enskilda kunden som får en unik lösning skräddarsydd enligt eget önskemål och behov. Den här leveransstrategin brukar kallas engineer-to-order. Att verka inom denna kontext ställer givetvis helt andra krav på företaget i jämförelse med kraven på exempelvis massproducerande företag.

    I massproducerande företag främjas repetitiva moment för att företaget effektivt ska kunna producera stora volymer av samma produkt. Vid kundanpassning ställs dock krav på företagets flexibilitet för att de ska kunna svara an till en stor variation av kundkrav.

    Litteraturen och teorin som berör tillverkningsindustrin är dock ofta grundad i den massproduktionslogik som varit den gällande modellen under den större delen av industrialiseringen. Av denna anledning finns det ett behov av ny kunskap som tar gällande förutsättningar i beaktning. Det är i detta ljus vi ser Viskleken: som en agent med utgångspunkt i kundanpassningens faktiska utmaningar vidgar vyerna för vilka färdigheter och kompetenser som nutidens tillverkande företag behöver förfoga över.

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  • 15.
    Lennartsson, Martin
    et al.
    Jönköping University, School of Engineering, JTH, Construction Engineering and Lighting Science.
    André, Samuel
    Jönköping University, School of Engineering, JTH, Industrial Product Development, Production and Design.
    Elgh, Fredrik
    Jönköping University, School of Engineering, JTH, Industrial Product Development, Production and Design, JTH, Product design and development (PDD).
    PLM support for design platforms in industrialized house-building2023In: Construction Innovation, ISSN 1471-4175, E-ISSN 1477-0857, Vol. 23, no 2, p. 265-286Article in journal (Refereed)
    Abstract [en]

    Purpose

    The purpose of this research is to support the customization ability for industrial house building companies striving to offer individualized products but with a strategy which includes a production facility. This is accomplished by analyzing the as-is state in terms of existing engineering assets and by proposing a to-be state using the design platform and product lifecycle management (PLM) support.

    Design/methodology/approach

    This study is based on design research methodology and collected data are in-depth interviews, document reviews and workshops and method development. The theoretical baseline is product platforms and the design platform.

    Findings

    The analysis showed that despite use of a platform, inherent assets are disorganized. Still, the identified object-based engineering assets were possible to include in a conceptual proposal for better management, both in the process and product view, using an asset relationship matrix and a PLM system.

    Practical implications

    The results should be applicable for industrial house building and off-site construction companies and offers an approach to identify and manage their assets and platforms which are crucial to stay competitive.

    Originality/value

    Previous research on design platforms has focused on engineer-to-order companies within the mechanical industry. The contribution of this paper lies in the application and support of the design platform for industrial house building and the introduction of PLM system support.

  • 16.
    Lennartsson, Martin
    et al.
    Jönköping University, School of Engineering, JTH, Civil Engineeering and Lighting Science.
    Bäckstrand, Jenny
    Jönköping University, School of Engineering, JTH, Supply Chain and Operations Management.
    Getting the most out of a collaborative research project – Cross industry design for a holistic view and increased learning2018In: Proceedings of the 34th Annual ARCOM Conference, 3-5 September 2018, Belfast, UK / [ed] C. Gorse, & C. J. Neilson, Association of Researchers in Construction Management (ARCOM), 2018, p. 526-535Conference paper (Refereed)
    Abstract [en]

    Lately, collaborative research has gained recognition. The balance between scientific rigour and practical relevance is a continuing issue within construction management research. The purpose of this paper it to describe a cross-industry and cross disciplinary approach to co-creation of knowledge through a collaborative research approach. A collaborative research project on the topic communication regarding customer specific demands is presented using a model with two interacting cycles for knowledge creation. Two construction companies, a housing company with off-site manufacturing and a small subcontractor manufacturing street doors and front doors, are participating. Four other companies within mechanical manufacture, telecom and consultancy are involved. To engage the companies, the project emphasizes activities not adding any contribution to academic production. Networking, industrial education, publications in trade journals, participation in trade fairs etc. might be essential to convince the industry of the practical relevance. The findings prove that applied research does not need to be isolated to specific industries or disciplines, as the collected data are applicable to the different participating companies' despite of their differences. 

  • 17.
    Lennartsson, Martin
    et al.
    Jönköping University, School of Engineering, JTH, Civil Engineeering and Lighting Science.
    Elgh, Fredrik
    Jönköping University, School of Engineering, JTH, Industrial Product Development, Production and Design.
    Exploring Product Development in Industrialized Housing to Facilitate a Platform Strategy2018In: Proceedings of 26th Annual Conference of the International Group for Lean Construction / [ed] González, V.A., Chennai, India: The International Group for Lean Construction , 2018, p. 538-548Conference paper (Refereed)
    Abstract [en]

    Industrialized house-building companies are offering unique products by adopting an engineer-to-order (ETO) strategy. Client satisfaction is achieved by adaptation of product solutions and swift introduction of new technology in combination with cost-efficient production and short lead-time for completion. Product development is executed in collaboration with the clients and changes in requirements are frequent. The use of product platforms, where external and internal efficiency are well-balanced, has been acknowledged as a strategic enabler for mass customization and increased competitiveness. However, ETO-companies struggle with adopting the common product platform approach, set by pre-defined modules and components. Predefinitions may cause an imbalance between product development and a lean production system. The aim of this work was to analyse current strategies and support to master the balance of external and internal efficiency in product development within industrialized housebuilding to facilitate the development of a product platform strategy. Data were gathered from a single case study and an on-going product platform development and includes interviews and document analysis. The findings show that product development is guided by a technical platform, but there is an imbalance where external efficiency is prioritized over the internal efficiency.

  • 18.
    Lennartsson, Martin
    et al.
    Jönköping University, School of Engineering, JTH, Civil Engineeering and Lighting Science.
    Movaffaghi, Hamid
    Jönköping University, School of Engineering, JTH, Civil Engineeering and Lighting Science.
    Linderoth, Henrik
    Jönköping University, School of Engineering, JTH, Civil Engineeering and Lighting Science.
    Exploration of the BIM Development and Application: Identifying Key Areas for the Industrialized House-Building Sector2018In: Proceedings of the 17th International Conference on Computing in Civil and Building Engineering. 5-7 June 2018, Tampere, Finland. / [ed] Mela, K., Pajunen, S. and Raasakka, V., 2018, p. 1030-1037Conference paper (Refereed)
    Abstract [en]

    Building Information Modelling (BIM) is claimed to transform the Architecture, Engineering and Construction (AEC) industry, whereas current research has argued that diffusion of BIM use proceeds at a slower rate than the optimistic predictions. Much of the research on BIM has focused on the traditional part of the industry and larger companies, whereas less attention has been paid to the industrialized house-builders. The underlying idea of industrialized house-building is to increase efficiency, both internally (do things right) and externally (do the right things), with repetitiveness in production facilities. Previous research indicates that there is a lack of demand for BIM, both internally and externally, and that BIM use is rather determined by an individual’s subjective positive or negative evaluation of BIM, which may be hazardous for industrialized house-builders. However, using BIM in repetitive processes is claimed to have potential to improve the output of industrialized housing building.

    Hence, based on this background the aim of the paper is twofold: Firstly, to explore the current state of practice, and perceived constraints and driving forces of BIM-use with respect to industrialized house-building. Secondly; based on the results identify key areas for the continuous development of BIM within this sector of the construction trade. A mixed method approach was employed. To begin with, participant observations were carried out in connection to a regional development project, where managers from a selection of industrialized house-building companies assembled in order to identify key areas for development. Thereafter, interviews with managers in industrialized house-building companies were conducted to describe a state of practice within the industrialized house-building sector. Finally, a survey (n=52) was administered to employees at industrialized house-building companies on the Swedish market.

    Deducted from the observations at the meetings, the vast number of different software that are used in a large variety of different processes and the need for integration between BIM and other systems was highlighted. Discussions mostly concerned technical issues that can be explained by the fact that meetings participants were technical and development managers. The interviews gave at hand that better connection between BIM and the Enterprise Resource Planning (ERP) is a topic that should be prioritized. The results from the survey showed that 63 per cent of the respondents have experience from working with BIM. The immediate results show similarities with previous studies of BIM use among mid-sized firms in the traditional building and construction industry regarding use frequency, perceived benefits and constraints, as well as perceived challenges. However, it is concluded that the industrialized house building sector need to adapt BIM aligned to their unique conditions in order to reap benefits, without looking too much at what is going on in the traditional construction industry.

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    fulltext
  • 19.
    Lennartsson, Martin
    et al.
    Jönköping University, JTH, Byggnadsteknik och belysningsvetenskap.
    Movaffaghi, Hamid
    Jönköping University, JTH, Byggnadsteknik och belysningsvetenskap.
    Linderoth, Henrik
    Jönköping University, JTH, Byggnadsteknik och belysningsvetenskap.
    Exploration of the BIM Development and Application: Identifying Key Areas for the Industrialized House-Building Sector2018In: Proceedings of the 17th International Conference on Computing in Civil and Building Engineering. 5-7 June 2018, Tampere, Finland. / [ed] Mela, K., Pajunen, S. and Raasakka, V., 2018, p. 1030-1037Conference paper (Refereed)
    Abstract [en]

    Building Information Modelling (BIM) is claimed to transform the Architecture, Engineering and Construction (AEC) industry, whereas current research has argued that diffusion of BIM use proceeds at a slower rate than the optimistic predictions. Much of the research on BIM has focused on the traditional part of the industry and larger companies, whereas less attention has been paid to the industrialized house-builders. The underlying idea of industrialized house-building is to increase efficiency, both internally (do things right) and externally (do the right things), with repetitiveness in production facilities. Previous research indicates that there is a lack of demand for BIM, both internally and externally, and that BIM use is rather determined by an individual’s subjective positive or negative evaluation of BIM, which may be hazardous for industrialized house-builders. However, using BIM in repetitive processes is claimed to have potential to improve the output of industrialized housing building.

    Hence, based on this background the aim of the paper is twofold: Firstly, to explore the current state of practice, and perceived constraints and driving forces of BIM-use with respect to industrialized house-building. Secondly; based on the results identify key areas for the continuous development of BIM within this sector of the construction trade. A mixed method approach was employed. To begin with, participant observations were carried out in connection to a regional development project, where managers from a selection of industrialized house-building companies assembled in order to identify key areas for development. Thereafter, interviews with managers in industrialized house-building companies were conducted to describe a state of practice within the industrialized house-building sector. Finally, a survey (n=52) was administered to employees at industrialized house-building companies on the Swedish market.

    Deducted from the observations at the meetings, the vast number of different software that are used in a large variety of different processes and the need for integration between BIM and other systems was highlighted. Discussions mostly concerned technical issues that can be explained by the fact that meetings participants were technical and development managers. The interviews gave at hand that better connection between BIM and the Enterprise Resource Planning (ERP) is a topic that should be prioritized. The results from the survey showed that 63 per cent of the respondents have experience from working with BIM. The immediate results show similarities with previous studies of BIM use among mid-sized firms in the traditional building and construction industry regarding use frequency, perceived benefits and constraints, as well as perceived challenges. However, it is concluded that the industrialized house building sector need to adapt BIM aligned to their unique conditions in order to reap benefits, without looking too much at what is going on in the traditional construction industry.

    Download full text (pdf)
    FULLTEXT01
  • 20.
    Lennartsson, Martin
    et al.
    Jönköping University, School of Engineering, JTH, Product Development, Production and Design, JTH, Product design and development (PDD).
    Raudberget, Dag
    Jönköping University, School of Engineering, JTH, Product Development, Production and Design, JTH, Production development. Jönköping University, School of Engineering, JTH, Product Development, Production and Design, JTH, Product design and development (PDD).
    Elgh, Fredrik
    Jönköping University, School of Engineering, JTH, Product Development, Production and Design, JTH, Product design and development (PDD).
    Analysis of product development connected to production for industrialized housebuilding2023In: Leveraging transdisciplinary engineering in a changing and connected world: Proceedings of the 30th ISTE International Conference on Transdisciplinary Engineering, Hua Hin Cha Am, Thailand, July 11–14, 2023 / [ed] P. Koomsap, A. Cooper & J. Stjepandić, Amsterdam: IOS Press, 2023, p. 112-121Conference paper (Refereed)
    Abstract [en]

    Industrialized housebuilding (IHB) is a sector within the construction trade where product platforms have been introduced from the mechanical industry to manage the product architecture and allow mass customization. The aim of this study is to analyze product development projects connected to the product platform and the production. For IHB, the backbone is a technical platform where components are designed and combined. Clients are satisfied, avoiding compromising the technical platform and the product architecture of the different variants. However, the adaptation to production is decisive and production has increased automation, with less flexibility in relation to the products. Still, product development has focused on the engineering view and the development of building components which fit in the predefined or well-established production facility while at the same time satisfy customer demands, i.e., maintaining the balance between distinctiveness and commonality. The study has observed one IHB company and two of their development projects focusing on changes in the product architecture for components across several of their product families. The development has been carried out in a bottom-up fashion. The results indicate difficulties in finding solutions, which fit production. An integrated design of production obstructs product development; the selection of project participants may affect the project results, both in terms of prior experience but also the problem-solving ability; the lack of project documentation is costly since experience is not captured, which could be recycled in future developments.

  • 21.
    Lennartsson, Martin
    et al.
    Jönköping University, School of Engineering, JTH, Industrial Product Development, Production and Design, JTH, Product design and development (PDD).
    Raudberget, Dag
    Jönköping University, School of Engineering, JTH, Industrial Product Development, Production and Design, JTH, Production development. Jönköping University, School of Engineering, JTH, Industrial Product Development, Production and Design, JTH, Product design and development (PDD).
    Elgh, Fredrik
    Jönköping University, School of Engineering, JTH, Industrial Product Development, Production and Design, JTH, Product design and development (PDD).
    Areth Koroth, Rohith
    Jönköping University, School of Engineering, JTH, Industrial Product Development, Production and Design, JTH, Product design and development (PDD).
    Exploring the Technical Platform in Industrialized Housebuilding for Robust Product Architecture2022In: Transdisciplinarity and the Future of Engineering: Proceedings of the 29th ISTE International Conference on Transdisciplinary Engineering (TE2022) / [ed] B. R. Moser, P. Koomsap & J. Stjepandić, Amsterdam: IOS Press, 2022, p. 33-42Conference paper (Refereed)
    Abstract [en]

    Improved resource efficiency, in industry and throughout the product life cycle, is a challenge and potentially, integrated product and production platforms can act as support. The aim of this study is to explore the current state of the technical platform in two industrialized housebuilding (IHB) companies from a mixed product architecture perspective. The study is part of a collaboration also involving three manufacturing companies and one IT provider. The research is crossing borders by means of interactive research and transdisciplinary engineering, and more than 50 practitioners and 13 researchers with competences in product management, engineering design, computational engineering, software development, production development, testing, quality, sourcing, and project management have been involved. Product platforms have been introduced in IHB to better control mixed product architectures and allow mass customization. Commonly, there is a technical platform for product architecture management, and a process platform for production management. High customization levels have resulted in an increasing number of variants not efficiently utilizing the technical platform. The results show that strong clients have negative influence on the technical platform while offering multiple products may facilitate simpler management of the technical platform but makes it more difficult to make changes and improvements.

  • 22.
    Lennartsson, Martin
    et al.
    Jönköping University, School of Engineering, JTH, Civil Engineering and Lighting Science.
    Yitmen, Ibrahim
    Jönköping University, School of Engineering, JTH, Civil Engineering and Lighting Science.
    Movaffaghi, Hamid
    Jönköping University, School of Engineering, JTH, Civil Engineering and Lighting Science.
    Linderoth, Henrik
    Jönköping University, School of Engineering, JTH, Civil Engineering and Lighting Science.
    Framework for Digital Development in Industrialized Housebuilding2020In: SPS2020: Proceedings of the Swedish Production Symposium, October 7–8, 2020 / [ed] K. Säfsten & F. Elgh, Amsterdam: IOS Press, 2020, Vol. 13, p. 335-345Conference paper (Refereed)
    Abstract [en]

    Building Information Modelling (BIM) is claimed to transform the Architecture, Engineering and Construction (AEC) industry, whereas current research has argued that diffusion of BIM use proceeds at a slower rate than the optimistic predictions. Despite that potential of BIM is higher in industrialized housebuilding, the trade express similar characteristics as traditional construction both in terms of BIM sue but also organization of assets. The aim of this paper is to present a conceptual framework for digital development in industrialized timber housing. Data were gathered from eight industrialized housebuilding companies in a mixed approach with interviews, focus groups and a survey. The analysis presents the current use of BIM and digital tools and prioritized development areas within this domain. By adding a theoretical overview of current research for industrialized housebuilding with focus on platform strategies and digital development a framework is drawn. Problems with transfer in the interfaces between software were emphasized. Current research on developing a system for Product Lifecycle Management (PLM) in industrialized housebuilding indicate a path forward. A PLM system facilitates the development of digital developments such as digital twins and smart products, which possess the potentials to generate crucial feedback, which is crucial for the competitiveness and efficiency of industrialized housebuilding. Thus, for a trade with high levels of complexity, a move towards a fully functional PLM system might not only be desirable but decisive.

  • 23.
    Lennartsson, Martin
    et al.
    Jönköping University, JTH, Byggnadsteknik och belysningsvetenskap.
    Yitmen, Ibrahim
    Jönköping University, JTH, Byggnadsteknik och belysningsvetenskap.
    Movaffaghi, Hamid
    Jönköping University, JTH, Byggnadsteknik och belysningsvetenskap.
    Linderoth, Henrik
    Jönköping University, JTH, Byggnadsteknik och belysningsvetenskap.
    Framework for Digital Development in Industrialized Housebuilding2020In: SPS2020: Proceedings of the Swedish Production Symposium, October 7–8, 2020 / [ed] K. Säfsten & F. Elgh, Amsterdam: IOS Press , 2020, p. 335-345Conference paper (Refereed)
    Abstract [en]

    Building Information Modelling (BIM) is claimed to transform the Architecture, Engineering and Construction (AEC) industry, whereas current research has argued that diffusion of BIM use proceeds at a slower rate than the optimistic predictions. Despite that potential of BIM is higher in industrialized housebuilding, the trade express similar characteristics as traditional construction both in terms of BIM sue but also organization of assets. The aim of this paper is to present a conceptual framework for digital development in industrialized timber housing. Data were gathered from eight industrialized housebuilding companies in a mixed approach with interviews, focus groups and a survey. The analysis presents the current use of BIM and digital tools and prioritized development areas within this domain. By adding a theoretical overview of current research for industrialized housebuilding with focus on platform strategies and digital development a framework is drawn. Problems with transfer in the interfaces between software were emphasized. Current research on developing a system for Product Lifecycle Management (PLM) in industrialized housebuilding indicate a path forward. A PLM system facilitates the development of digital developments such as digital twins and smart products, which possess the potentials to generate crucial feedback, which is crucial for the competitiveness and efficiency of industrialized housebuilding. Thus, for a trade with high levels of complexity, a move towards a fully functional PLM system might not only be desirable but decisive.

  • 24.
    Melander, Anders
    et al.
    Jönköping University, Jönköping International Business School, JIBS, ESOL (Entrepreneurship, Strategy, Organization, Leadership). Jönköping University, Jönköping International Business School, JIBS, Center for Family Enterprise and Ownership (CeFEO).
    Johansson, Peter
    Jönköping University, School of Engineering, JTH, Civil Engineering.
    Lennartsson, Martin
    Jönköping University, School of Engineering, JTH, Civil Engineering.
    Elgh, Fredrik
    Jönköping University, School of Engineering, JTH. Research area Product Development - Simulation and Optimization.
    Achtenhagen, Leona
    Jönköping University, Jönköping International Business School, JIBS, Business Administration. Jönköping University, Jönköping International Business School, JIBS, Center for Family Enterprise and Ownership (CeFEO).
    Vimarlund, Vivian
    Jönköping University, Jönköping International Business School, JIBS, Informatics.
    Granath, Kaj
    Jönköping University, School of Engineering, JTH, Civil Engineering.
    Hellborg, Göran
    Jönköping University, School of Engineering, JTH, Civil Engineering.
    Entreprenöriell produktframtagning för industriellt byggande2014Report (Other academic)
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  • 25.
    Raudberget, Dag
    et al.
    Jönköping University, School of Engineering, JTH, Industrial Product Development, Production and Design, JTH, Production development. Jönköping University, School of Engineering, JTH, Industrial Product Development, Production and Design, JTH, Product design and development (PDD).
    Elgh, Fredrik
    Jönköping University, School of Engineering, JTH, Industrial Product Development, Production and Design, JTH, Product design and development (PDD).
    Lennartsson, Martin
    Jönköping University, School of Engineering, JTH, Industrial Product Development, Production and Design, JTH, Product design and development (PDD).
    Areth Koroth, Rohith
    Jönköping University, School of Engineering, JTH, Industrial Product Development, Production and Design, JTH, Product design and development (PDD).
    A Study of the Application of Design Assets in Product Development2022In: Transdisciplinarity and the Future of Engineering: Proceedings of the 29th ISTE International Conference on Transdisciplinary Engineering (TE2022) / [ed] B. R. Moser, P. Koomsap & J. Stjepandić, Amsterdam: IOS Press, 2022, p. 24-32Conference paper (Refereed)
    Abstract [en]

    The introduction of product platforms has been acknowledged as a strategic enabler for increased business competitiveness. A vast body of research has described different aspects of platforms, but little work has been done on defining or delimiting the different types of elements that may build up a platform. Design assets include platform elements that are not commonly considered as a part of a platform. Previous research has suggested the introduction of formalized design assets to systematically extend an items-based platform with intangible elements. These are transdisciplinary objects, specifically prepared for reuse between projects to provide support for a wide range of engineering activities: specialized CAD geometry, working methods, spread sheets, function models or different types of knowledge representations, among others. The presented research is part of a larger project seeking to improve the collaboration between product development and manufacturing. This paper focuses on the use of potential and formal design assets at a development department of a global manufacturer of consumer products. The results show that the application of formal design assets depends on several factors, such as the level of professional experience and individual working styles. The contribution of the paper is a description of which formal and informal design assets that are used and a discussion on how the formal assets can be better utilized.

  • 26.
    Raudberget, Dag
    et al.
    Jönköping University, School of Engineering, JTH, Product Development, Production and Design, JTH, Production development. Jönköping University, School of Engineering, JTH, Product Development, Production and Design, JTH, Product design and development (PDD).
    Elgh, Fredrik
    Jönköping University, School of Engineering, JTH, Product Development, Production and Design, JTH, Product design and development (PDD).
    Lennartsson, Martin
    Jönköping University, School of Engineering, JTH, Product Development, Production and Design, JTH, Product design and development (PDD).
    Areth Koroth, Rohith
    Jönköping University, School of Engineering, JTH, Product Development, Production and Design, JTH, Product design and development (PDD).
    The use of design assets as potential platform elements in two manufacturing disciplines2023In: Leveraging transdisciplinary engineering in a changing and connected world: Proceedings of the 30th ISTE International Conference on Transdisciplinary Engineering, Hua Hin Cha Am, Thailand, July 11–14, 2023, Amsterdam: IOS Press, 2023, p. 102-111Conference paper (Refereed)
    Abstract [en]

    A vast body of research has described product platforms as strategic enablers for increased business competitiveness, but there is a lack of empirical research describing what types of assets that are used in industry as elements in a platform. Previous research has suggested a platform as a “collection of assets shared by a group of products” and also classified these assets into four transdisciplinary categories: Components, Processes, Knowledge and People and Relationships. This categorization is, however, too imprecise to identify the core assets needed to build a platform, and better guidance is needed. This paper presents a cross-case study of assets used in the product development process at two case companies. These represent two different product disciplines: Industrialized housebuilding, a sector within the construction trade, and Outdoor Power Equipment producing forest and gardening tools. The main contribution of the paper is a comparison of what formal and informal design assets that are used in the two disciplines.

  • 27.
    Raudberget, Dag
    et al.
    Jönköping University, School of Engineering, JTH, Industrial Product Development, Production and Design.
    Elgh, Fredrik
    Jönköping University, School of Engineering, JTH, Industrial Product Development, Production and Design.
    Stolt, Roland
    Jönköping University, School of Engineering, JTH, Industrial Product Development, Production and Design.
    Johansson, Joel
    Jönköping University, School of Engineering, JTH, Industrial Product Development, Production and Design.
    Lennartsson, Martin
    Jönköping University, School of Engineering, JTH, Construction Engineering and Lighting Science.
    Developing agile platform assets: exploring ways to reach beyond modularisation at five product development companies2019In: International Journal of Agile Systems and Management, ISSN 1741-9174, E-ISSN 1741-9182, Vol. 12, no 4, p. 311-331Article in journal (Refereed)
    Abstract [en]

    The use of a product platform has been acknowledged as a strategic enabler for product family development and mass customisation. However, many companies struggle with adopting the common platform approach building upon pre-defined modules and components as it constrains the fulfilment of unique customer requirements and a rapid introduction of new technologies. These are the conditions under which manufacturing companies acting as suppliers operates, where unique solutions are delivered to different business customers, market segments or brands. This work reports the results from case studies of platform development conducted in collaboration with five product developing and manufacturing companies. The focus of this paper is on their initial states; including how they work with their product concept before a development project is started, the character of requirements and the adoption of product platforms. The main contribution of this work is a presentation of criteria on, and identification of, new platform elements termed design assets. These are introduced as a means to enable diverse types of resources to be reused in a company and a pragmatic way to bridge the gap between the physical products and the knowledge, tools and methods needed to realise these.

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  • 28.
    Thajudeen, Shamnath
    et al.
    Jönköping University, School of Engineering, JTH, Industrial Product Development, Production and Design, JTH, Product design and development (PDD).
    Elgh, Fredrik
    Jönköping University, School of Engineering, JTH, Industrial Product Development, Production and Design, JTH, Product design and development (PDD).
    Lennartsson, Martin
    Jönköping University, School of Engineering, JTH, Industrial Product Development, Production and Design, JTH, Product design and development (PDD).
    A Framework Supporting Mixed Production Strategies in Platform Development: A Case Study in Post and Beam Building2022In: Proceedings: 38th Annual ARCOM Conference, 5-7 September 2022, Glasgow Caledonian University, Glasgow, UK / [ed] A. Tutesigensi & C. J. Neilson, Glasgow, UK: Association of Researchers in Construction Management , 2022, p. 93-102Conference paper (Refereed)
    Abstract [en]

    Industrialised house building (IHB) design incurs complexities as extensive engineering are required due to high customisation. Companies use different production strategies (PS) to develop building components ranging from standardised to customised depending on the requirements. Platform-based product development has received increased attention from IHB companies striving to be competitive in the industry. However, strategies for platform development supporting the design process are not well-defined for companies using a combination of PS in their development. This study proposes a framework using different PS in the development of a product platform to support the design phase of the post and beam IHB system. Empirical data were gathered from a Swedish multistorey house building company. The main contribution of this study is to provide insights into production strategies while designing components. Moreover, the case is used to exemplify how different subcomponents of the building system can be classified into production strategies and facilitate postponement of strategies to achieve platformbased development. The potential application of different support tools and methods in incremental platform development has been presented.

  • 29.
    Thajudeen, Shamnath
    et al.
    Jönköping University, School of Engineering, JTH, Industrial Product Development, Production and Design, JTH, Product design and development (PDD).
    Elgh, Fredrik
    Jönköping University, School of Engineering, JTH, Industrial Product Development, Production and Design, JTH, Product design and development (PDD).
    Lennartsson, Martin
    Jönköping University, School of Engineering, JTH, Industrial Product Development, Production and Design, JTH, Product design and development (PDD).
    Applying a DFMA Approach in the Redesign of Steel Bracket - a Case Study in Post and Beam System2022In: Proceedings of the 30th Annual Conference of the International Group for Lean Construction (IGLC), Edmonton, Canada, July 25-31, 2022, 2022, p. 564-575Conference paper (Refereed)
    Abstract [en]

    Design for manufacturing and assembly (DfMA) has gained increased attention in the construction industry as the process has been industrialized and shifting towards a combination of factory prefabrication and assembly on site. The aim of this study is two-fold. Firstly, to apply the DfMA approach in the redesign of a steel bracket from a post and beam building system to simplify the design for reducing the cost and improving manufacturability. Secondly, to experimentally evaluate the mechanical properties of the redesigned bracket for implementation. An experimental case study has been conducted in a multistorey post and beam building system. The empirical data were collected from five semi-structured interviews and two workshops.

    The result shows that the DfMA approach has the potential to improve the manufacturability and cost of building components in Industrialized house building (IHB) and is comparable to lean design. Moreover, the proposed steel bracket offers satisfactory load-bearing capacities and shows an improvement with a reduction of cost by 15%, lead time by 50%, and material efficiency by 25%. DFMA can be used as a promising approach for aligning the design phases of IHB with the production and assembly by improving cross-functional collaboration.

  • 30.
    Thajudeen, Shamnath
    et al.
    Jönköping University, School of Engineering, JTH, Industrial Product Development, Production and Design, JTH, Product design and development (PDD).
    Elgh, Fredrik
    Jönköping University, School of Engineering, JTH, Industrial Product Development, Production and Design, JTH, Product design and development (PDD).
    Lennartsson, Martin
    Jönköping University, School of Engineering, JTH, Industrial Product Development, Production and Design, JTH, Product design and development (PDD).
    Supporting the Reuse of Design Assets in ETO-Based Components: A Case Study from an Industrialised Post and Beam Building System2022In: Buildings, E-ISSN 2075-5309, Vol. 12, no 1, article id 70Article in journal (Refereed)
    Abstract [en]

    The ability to offer customisation has been considered as a competitive advantage for industrialised house building (IHB) companies. Product platform approaches have been acknowledged as one of the prominent ways to improve both internal and external efficiency. However, the use of traditional platform-based strategies does not suffice for the design of engineer-to-order (ETO)-based components in a building system. The purpose of this research is to test and evaluate how the reuse of design assets can be achieved by using a parametric modelling approach to support the design process of ETO-based components in a post and beam building system. This is an additional study using the design platform approach (DPA) that contributes to expanding the knowledge for designing ETO-based components. This research proposes a parametric design platform method developed by following an inductive approach based on the findings from a detailed study on bracket connection with a single case study in a Swedish multi-storey house building company. The proposed method offers flexibility in modelling ETO building components, facilitates design automation, and shows a 20-times improvement in the modelling process. This approach can be used in any building system with ETO-based components by identifying, formalising, and reusing connected design assets. A key finding is that the ETO components can be shifted towards configurable solutions to achieve platform-based design.

  • 31.
    Thajudeen, Shamnath
    et al.
    Jönköping University, School of Engineering, JTH, Industrial Product Development, Production and Design, JTH, Product design and development (PDD).
    Lennartsson, Martin
    Jönköping University, School of Engineering, JTH, Civil Engineering and Lighting Science.
    Elgh, Fredrik
    Jönköping University, School of Engineering, JTH, Industrial Product Development, Production and Design.
    Challenges and critical success factors for the design phase in Swedish industrialised house building2019In: Proceedings of the 35th Annual ARCOM Conference, 2-4 September 2019, Leeds, UK / [ed] Gorse & C. J. Neilson, Association of Researchers in Construction Management (ARCOM), 2019, p. 34-43Conference paper (Refereed)
    Abstract [en]

    The house building industry has been characterised as less productive compared to the manufacturing industry with numerous and challenging activities including a complex integration process. For the last 20 years, industrialised house building has gained increased research and industry attention and is identified as a potential way to improve the overall house building productivity. In the overall process, the design phase has been identified as the bottleneck with several disciplines which have to be coordinated to generate a design solution that meets various customer and market requirements. Many aspects of a building's performance depend on the decisions taken in the early design process. These decisions can have a substantial impact on the overall design, lead time, cost and quality of the final product. However, there are many other important factors which need to be considered by designers during the design phase. Less attention has been paid to the identification of these factors within the design phase of the industrialised house building. Thus, the main purpose of this paper is to identify challenges and outline the critical success factors to be considered in the design phase of the Swedish industrialised house building. Qualitative research was conducted in combination with literature reviews and multiple case studies linking three Swedish house building companies. Empirical data were gathered from 20 semi-structured interviews. The study identified common challenges in the house building industry and 20 critical factors that should be addressed in the design phase from both literature and practitioners view. The result shows that fixed production is crucial for identifying the critical factors rather than a building system. Also, many challenges identified from this study could be managed by developing a platform-based approach with support tools and methods for critical factors in the design phase.

  • 32.
    Thajudeen, Shamnath
    et al.
    Jönköping University, School of Engineering, JTH, Industrial Product Development, Production and Design, JTH, Product design and development (PDD).
    Lennartsson, Martin
    Jönköping University, School of Engineering, JTH, Civil Engineering and Lighting Science.
    Elgh, Fredrik
    Jönköping University, School of Engineering, JTH, Industrial Product Development, Production and Design.
    Expanding the building system into a product platform for improved design and manufacture – A case study in industrialised house-building2020In: SPS2020: Proceedings of the Swedish Production Symposium, October 7–8, 2020 / [ed] K. Säfsten & F. Elgh, Amsterdam: IOS Press, 2020, p. 346-357Conference paper (Refereed)
    Abstract [en]

    Industrialised house builders in Sweden have been challenged to meet the demand for housing solutions as the population has increased at a faster rate. As a result, the housing industry is currently faced with objectives to improve productivity and internal efficiency while also controlling the production cost of houses without compromising external efficiency. To remain competitive, many companies developed own building system (BS) based on fixed or partially fixed production systems with different prefabrication techniques. The challenges remain in the design phase and proper methods and tools are required to manage it. In many industries, the product platform approach has been used as a means to achieve both internal and external efficiency. However, little attention has been paid in relating the platform approach to building system support in the design phase of Industrialised house building (IHB). Thus, the main purpose of this paper is to explore the current state of the industrialised house building system and outline design support solutions for the building system from a product platform approach. Qualitative research was conducted by linking a single case company working with post and beam building system in combination with a literature review. Empirical data were gathered from five semi-structured interviews and two workshop sections. A cause-effect analysis has been conducted to realize the potential causes of challenges in the design process. The result illustrates a methodology with principle solutions that can be used as design support for the case company as a path forward and improve further from a product platform perspective.

  • 33.
    Thajudeen, Shamnath
    et al.
    Jönköping University, School of Engineering, JTH, Industrial Product Development, Production and Design, JTH, Product design and development (PDD).
    Lennartsson, Martin
    Jönköping University, School of Engineering, JTH, Industrial Product Development, Production and Design, JTH, Product design and development (PDD).
    Elgh, Fredrik
    Jönköping University, School of Engineering, JTH, Industrial Product Development, Production and Design, JTH, Product design and development (PDD).
    Identification of challenges and success factors in industrialised house building design2022In: Proceedings of the Institution of Civil Engineers: Management, procurement and law, ISSN 1751-4304, Vol. 175, no 1, p. 27-37Article in journal (Refereed)
    Abstract [en]

    The transformation from a traditional to an industrialised house building system requires a strong focus on the design phase, as several factors must be considered and the decisions taken impact both productivity and the value created for customers. The main purpose of this study is to explore the existing challenges and outline the critical success factors to be considered in the design phase of industrialised house building. A multiple-case study was conducted by linking five Swedish timber-based house building companies using different building systems. Empirical data were gathered from 27 semi-structured interviews. The findings contribute to an increased understanding of the existing challenges and knowledge on the critical success factors in the design phase by classifying them into internal and external factors. Moreover, the building system is considered a bridge linking both, and these factors can be used as a decision making support tool for the evaluation and validation of the design solution. Therefore, individual support for the prioritised factors is critical for achieving an efficient design process. The results show that fixed production, not the building system, is crucial for identifying success factors. Finally, manufacturability and assembly factors were identified as prioritised and generally important factors in industrialised building.

  • 34.
    Thajudeen, Shamnath
    et al.
    Jönköping University, School of Engineering, JTH, Industrial Product Development, Production and Design.
    Lennartsson, Martin
    Jönköping University, School of Engineering, JTH, Civil Engineeering and Lighting Science.
    Elgh, Fredrik
    Jönköping University, School of Engineering, JTH, Industrial Product Development, Production and Design.
    Impact on the Design Phase of Industrial Housing When Applying a Product Platform Approach2018In: Proceedings of 26th Annual Conference of the International Group for Lean Construction / [ed] Vicente A. González, Chennai, India, 2018, p. 527-537Conference paper (Refereed)
    Abstract [en]

    With a glulam-based post-beam building system, a variety of building solutions is offered on the market for multi-story buildings. The building system must be adaptable to the demands of each project. However, short lead-time, efficient manufacturing and assembly must be ensured. The use of product platforms has been acknowledged as an enabler to manage external (customer) and internal (production) efficiency. The building system cannot be locked to a set of standard components as a high level of customisation is required. A set of methods and tools is needed to support the design work and to ensure that solutions stay inside the boundaries of the platform definition. The aim of this work is to map the state-of-practice in the design phase for a glulam building system from a platform theory perspective and outline a path forward for applying a sustainable platform development in companies where a component-based product platform does not suffice. Empirical data were gathered from an on-going product platform development including interviews and document analysis. The results show the lack of definition in platform-based product development from a theoretical perspective and need for development of support methods for design that align with different production strategies

  • 35.
    Thajudeen, Shamnath
    et al.
    Jönköping University, School of Engineering, JTH, Industrial Product Development, Production and Design, JTH, Product design and development (PDD).
    Lennartsson, Martin
    Jönköping University, School of Engineering, JTH, Civil Engineering and Lighting Science.
    Elgh, Fredrik
    Jönköping University, School of Engineering, JTH, Industrial Product Development, Production and Design.
    Persson, P.-J.
    Moelven Töreboda, Sweden.
    Parametric modelling of steel connectors in a glulam-based post and beam building system - Towards a flexible product platform approach2020In: Transdisciplinary Engineering for Complex Socio-technical Systems – Real-life Applications: Proceedings of the 27th ISTE International Conference on Transdisciplinary Engineering, July 1 – July 10, 2020 / [ed] J. Pokojski, M. Gil, L. Newnes, J. Stjepandić, N. Wognum, IOS Press, 2020, Vol. 12, p. 564-573Conference paper (Refereed)
    Abstract [en]

    House building projects are distinctive, and the degree of customisation creates bottlenecks in the design process and challenges for production, which results in longer lead time and higher costs. Aligned with a product platform approach, previous studies have introduced cost-effective approaches such as standardisation, modularization, configurators, etc. Still, components that cannot be completely modularized and configured due to high complexity level, may require a lot of engineering efforts during development. A platform approach that can be used to support engineer-to-order products that change over time still needs to be explored. The application of parametric modelling to automate the design process in the construction industry has the potential to further increase both the design and production efficiency. Thus, the objective of this research is to apply parametric modelling in the design of steel connectors used in a glulam based post and beam building system as part of a flexible product platform for increased design and production efficiency. A single case study has been carried out with a Swedish multi-storey house building company. Empirical data were gathered from a workshop with the design team followed by interviews, and document analysis. A computer-supported method for the steel bracket connectors has been developed, that connects post and beam components with pre-defined rules and constraints as part of the platform development. The result contributes to expanding knowledge about the development of a flexible product platform for improved design process and downstream production of customised components with parametric modelling support in the industrial post and beam buildng system.

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