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  • 1.
    Dagman, Andreas
    et al.
    Chalmers University of Technology.
    Söderberg, Rikard
    Institutionen för produkt- och produktionsutveckling, produktutveckling.
    Toward a Method for Improving Product Architecture Solutions by Integrating Designs for Assembly, Disassembly and Maintenance2012In: Proceedings of the ASME International Mechanical Engineering Congress and Exposition 2012Design, materials, and manufacturing: presented at ASME 2012 International Mechanical Engineering Congress and Exposition; November 9 - 15, 2012, Houston, Texas, USA, New York: American Society of Mechanical Engineers , 2012, p. 377-387Conference paper (Refereed)
  • 2.
    Dagman, Andreas
    et al.
    Chalmers University of Technology.
    Söderberg, Rikard
    Institutionen för produkt- och produktionsutveckling, produktutveckling.
    Lindkvist, Lars
    Institutionen för produkt- och produktionsutveckling, produktutveckling.
    Split-line design for given geometry and location schemes2007In: Journal of engineering design (Print), ISSN 0954-4828, E-ISSN 1466-1837, Vol. 18, no 4, p. 373-388Article in journal (Refereed)
    Abstract [en]

    The spatial relations between parts in an assembly can be critical for the functional and aesthetic quality of a product. In the case of the automobile, these relations can be between doors, fenders, hood, panels, and so on. Variation in these relations, caused by part and assembly variation, influences the output variation, which is what the customer sees and judges. This paper presents a computer-aided tolerancing tool that supports and improves split-line design with respect to geometrical variation. A split-line is the relation between two mating parts over a distance. The design and placement of a split-line in an automobile body are influenced by several aspects such as design language, geometrical dimensioning, crash safety, and so on. In this paper only the geometrical dimensioning aspects have been considered. The research has been carried out using simulations and analyses in a computer-aided tolerancing software. The tool presented describes a way to calculate and visualize the geometrically most robust area and split-line between two parts. The findings from the research show that it is difficult to calculate and visualize the result in flush and gap directions in the same way. The tool gives insight into how the configuration of the locating schemes influences the geometrical robustness of the design.

  • 3.
    Dagman, Andreas
    et al.
    Chalmers University of Technology.
    Wedel, Maria Knutsson
    Chalmers University of Technology.
    Johansson, Björn
    Institutionen för produkt- och produktionsutveckling, produktutveckling.
    Sustainable Production Research: a proposal of measuring research in sustainable production and monitoring of sustainability awareness2011Conference paper (Refereed)
  • 4.
    Hoffenson, Steven
    et al.
    Chalmers University of Technology.
    Dagman, Andreas
    Department of Product and Production Development, Chalmers University of Technology.
    Söderberg, Rikard
    Department of Product and Production Development, Chalmers University of Technology, Institutionen för produkt- och produktionsutveckling, produktutveckling.
    A Multi-­objective Tolerance Optimization Approach for Economic, Ecological, and Social Sustainability2013In: Proceedings of the 20th CIRP International Conference on Life Cycle Engineering, Encyclopedia of Global Archaeology/Springer Verlag, 2013, p. 729-734Conference paper (Refereed)
    Abstract [en]

    Sustainable design requires simultaneous consideration of the economic, ecological, and social consequences of design decisions. The selection of dimensional tolerances and materials are two such decisions that have impacts in all three of these areas. This article presents an optimization framework along with generalized models for considering sustainability and understanding how different aspects of sustainability may trade off with one another. A mobile phone design is used as a case study to demonstrate the strengths of the approach when varying manufacturing tolerance and material choice, and the results include three-dimensional Pareto frontiers illustrating the design tradeoffs.

  • 5.
    Hoffenson, Steven
    et al.
    Chalmers University of Technology, University of Michigan.
    Dagman, Andreas
    Luleå University of Technology, Department of Engineering Sciences and Mathematics, Product and Production Development.
    Söderberg, Rikard
    Department of Product and Production Development, Chalmers University of Technology, Institutionen för produkt- och produktionsutveckling, produktutveckling.
    Tolerance optimisation considering economic and environmental sustainability2014In: Journal of engineering design (Print), ISSN 0954-4828, E-ISSN 1466-1837, Vol. 25, no 10-12, p. 367-390Article in journal (Refereed)
    Abstract [en]

    Sustainability is becoming increasingly important in the development of new product and production solutions, and the eco-design movement stresses the importance of environmental considerations in all design phases and activities. One such design activity in the embodiment design phase of product development is the specification of dimensional tolerances, where designers seek to ensure high functionality at low costs. A traditional approach to this decision-making process is to minimise economic losses to the manufacturer and the consumer through a process known as tolerance optimisation. This paper presents a new approach for tolerance optimisation that considers sustainability not only in the context of economic costs but also environmental impacts, which are shown to be significantly affected by manufacturing and product quality. This new framework is formulated as a bi-objective optimisation problem to minimise economic and environmental costs, and important modelling considerations for these two types of costs are outlined and discussed. The proposed approach is explored using two example cases of design assemblies, which demonstrate the trade-offs between economic and environmental design objectives as a result of tolerances and other quality-related design decisions.

  • 6.
    Hoffenson, Steven
    et al.
    Chalmers University of Technology.
    Dagman, Andreas
    Luleå University of Technology, Department of Engineering Sciences and Mathematics, Product and Production Development.
    Söderberg, Rikard
    Institutionen för produkt- och produktionsutveckling, produktutveckling.
    Tolerance Optimization of a Mobile Phone Considering Consumer Demand for Quality and Sustainability in China, Sweden, and the United States2013In: Proceedings of the 19th International Conference on Engineering Design (ICED13): Design for Harmonies, Seoul, Korea, 19-22.08.2013 / [ed] Udo Lindemann, Design Research Society, 2013, Vol. 7: Human Behaviour in Design, p. 467-476Conference paper (Refereed)
    Abstract [en]

    Dimensional tolerances are chosen during the product development process to balance quality requirements against manufacturing costs. Designers typically judge how much variance should be allowed while still maintaining the perception of a high quality product or brand, but this is rarely based on an understanding of how consumers perceive that variance. Additionally, ecological sustainability priorities are often chosen without knowing how they will be received by consumers. This paper presents a survey-based technique for understanding how tolerance and pricing decisions influence a product developing firm’s profits, accounting for consumer perceptions of quality and environmental friendliness. A case study of a mobile phone design is explored, including variance propagation modeling, the design and administration of an online choice-based conjoint (CBC) survey, construction of consumer demand models, and profit maximization for the markets in three different countries. The results show a slight preference for high quality products compared with stronger preferences for other product attributes like low price, and the differences among the three markets are highlighted.

  • 7.
    Hoffenson, Steven
    et al.
    Chalmers University of Technology.
    Dagman, Andreas
    Department of Product and Production Development, Chalmers University of Technology.
    Söderberg, Rikard
    Department of Product and Production Development, Chalmers University of Technology, Institutionen för produkt- och produktionsutveckling, produktutveckling.
    Tolerance Specification Optimization for Economic and Ecological Sustainability2013In: Smart Product Engineering: Proceedings of the 23rd CIRP Design Conference, Bochum, Germany, March 11th - 13th, 2013, Encyclopedia of Global Archaeology/Springer Verlag, 2013, p. 865-874Conference paper (Refereed)
    Abstract [en]

    In the final stages of product development, dimensional tolerances are specified by designers to ensure high functionality at low costs. A traditional approach to this decision-making process is to minimize economic losses to the manufacturer and the consumer. This paper presents a new approach for tolerance allocation optimization that considers sustainability not only from economic costs but also ecological costs. The framework is formulated as a multi-objective optimization problem and explored with a case study on the design of an automotive body panel. Results of the case study include Pareto frontiers of non-dominated optimal solutions along with a parametric study to explore the influence of material choice on the results.

  • 8.
    Hoffenson, Steven
    et al.
    Chalmers University of Technology.
    Dagman, Andreas
    Department of Product and Production Development, Chalmers University of Technology.
    Söderberg, Rikard
    Department of Product and Production Development, Chalmers University of Technology, Institutionen för produkt- och produktionsutveckling, produktutveckling.
    Sten, Bengt
    Chalmers University of Technology.
    Tolerance Optimization for Economic and Ecological Sustainability Using RD&T2013In: Perspectives on managing life cycles: Proceedings of 6th International Conference on Life Cycle Management, Chalmers tekniska högskola , 2013, p. 856-859Conference paper (Refereed)
    Abstract [en]

    Product developers choose tolerances to go along with every geometric dimension, and they typically do so based on how the tolerances influence variation in so-called “critical” dimensions of the final assembled product. A common decision-making approach is to minimize costs given some acceptable critical dimensional variation, but this strategy often conflicts with ecological sustainability objectives. This paper introduces a new approach to simultaneously considering the ecological and economic consequences of tolerances through a software tool that combines Robust Design and Tolerancing (RD&T) with Environmental Priority Strategies in product development (EPS). This allows designers to simultaneously assess the economic and ecological sustainability outcomes associated with geometry, material, and tolerance choices, and it is demonstrated through design optimization of an automotive part.

  • 9.
    Johansson, Björn
    et al.
    Chalmers University of Technology.
    Dagman, Andreas
    Chalmers University of Technology.
    Rex, Emma
    Chalmers University of Technology.
    Wedel, Maria Knutsson
    Chalmers University of Technology.
    Nyström, Thomas
    Chalmers University of Technology.
    Stahre, Johan
    Chalmers University of Technology.
    Söderberg, Rikard
    Sustainable production Research: Awareness, Measures and Development2012In: OIDA International Journal of Sustainable Development, ISSN 1923-6654, E-ISSN 1923-6662, Vol. 4, no 11, p. 95-104Article in journal (Refereed)
    Abstract [en]

    This paper takes its standpoint in the hypothesis that awareness of sustainability is the key to create sustainable products, and that this awareness begins already at research level. It describes the development and follow-up of a method for increasing sustainability awareness in sustainable production research. Several activities were carried out to increase the awareness. Firstly) workshops with researchers and industry on sustainability. Secondly) development of measures based on literature and interviews with researchers. Thirdly) monitoring of awareness through concept maps. Progress was evaluated by comparing the awareness of the population when the project started in 2010, and then again in 2011. The results show that the participants had shifted their view from primary emphasizing technology towards a more balanced view of sustainability where social aspects were more often taken into consideration. According to the concept maps methodology, sustainability awareness in the population increased with 25%.

  • 10.
    Lejon, Erik
    et al.
    Luleå University of Technology, Department of Engineering Sciences and Mathematics, Product and Production Development.
    Lundin, Michael
    Luleå University of Technology, Department of Engineering Sciences and Mathematics, Product and Production Development.
    Dagman, Andreas
    Luleå University of Technology, Department of Engineering Sciences and Mathematics, Product and Production Development.
    Jeppsson, Peter
    Luleå University of Technology, Department of Engineering Sciences and Mathematics, Product and Production Development.
    Näsström, Mats
    Luleå University of Technology, Department of Engineering Sciences and Mathematics, Product and Production Development.
    Integrated Capture and Representation of Product Information In Computer-Aided Product Development2015In: ASME 2015 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference: August 2-5, 2015, Boston, Massachusetts, USA., New York: American Society of Mechanical Engineers , 2015, Vol. 1B, article id DETC2015-47299Conference paper (Refereed)
    Abstract [en]

    This paper features the implementation and evaluation of a proposed approach for information capture and representation integrated into the existing design environments at two manufacturing companies. A tool has been developed that automatically derives information from the CAD system during design and provides users with the means to capture product information that has previously been documented outside of the CAD system. Product information is managed in a PLM data model and becomes, once stored, the foundation for providing tailored views of information.Feedback from the evaluation shows that the prescribed approach was preferred to the current one and that it would likely provide value to users, both authors and consumers, of product information. This approach can reduce the time required to capture the pertinent product information. However, the primary savings are likely to be indirect as a result of increased consistency, understanding, and the potential (re)use of product information.The approach and tools presented constitute another step toward providing each stakeholder with more efficient, intuitive, contextual, and purposeful support for information capture and representation in computer-aided product development.

  • 11.
    Lindström, John
    et al.
    Luleå University of Technology, Department of Computer Science, Electrical and Space Engineering, Signals and Systems.
    Dagman, Andreas
    Luleå University of Technology, Department of Engineering Sciences and Mathematics, Product and Production Development.
    Karlberg, Magnus
    Luleå University of Technology, Department of Engineering Sciences and Mathematics, Product and Production Development.
    Functional Products lifecycle: Governed by sustainable win-win situations2014In: Procedia CIRP, ISSN 2212-8271, E-ISSN 2212-8271, Vol. 22, p. 163-168Article in journal (Refereed)
    Abstract [en]

    The paper proposes a Functional Products (FP) lifecycle viewed from economic, ecologic and societal perspectives. The overall FP lifecycle is further discussed from the viewpoint of its technical and economic lifecycles. The paper suggests that the overall FP lifecycle is governed by a sustainable win-win situation between the provider and customer sides, and thus that there needs to be a balance regarding the perceived value for both parties

  • 12.
    Lindström, John
    et al.
    Luleå University of Technology, Department of Computer Science, Electrical and Space Engineering, Signals and Systems.
    Dagman, Andreas
    Luleå University of Technology, Department of Engineering Sciences and Mathematics, Product and Production Development.
    Karlberg, Magnus
    Luleå University of Technology, Department of Engineering Sciences and Mathematics, Product and Production Development.
    The Functional Products technical lifecycle and its four sub-lifecycles2015In: Procedia CIRP, ISSN 2212-8271, E-ISSN 2212-8271, Vol. 38, p. 222-227Article in journal (Refereed)
    Abstract [en]

    The paper provides a further verification of the Functional Products (FP) technical lifecycle and additional details regarding its four sub-lifecycles concerning: hardware, software, service-support system and management of operation. Outlined, in a novel way, is how the four sub-lifecycles may be embodied in order to manage and keep the FP technical lifecycle running at an agreed-upon level of availability. The FP technical lifecycle is further analyzed from the viewpoint of its supporting role to the FP economic lifecycle, as well as compliance, regulatory and commercial aspects.

  • 13.
    Lundin, Michael
    et al.
    Luleå University of Technology, Department of Engineering Sciences and Mathematics, Product and Production Development.
    Lejon, Erik
    Luleå University of Technology, Department of Engineering Sciences and Mathematics, Product and Production Development.
    Dagman, Andreas
    Luleå University of Technology, Department of Engineering Sciences and Mathematics, Product and Production Development.
    Näsström, Mats
    Luleå University of Technology, Department of Engineering Sciences and Mathematics, Product and Production Development.
    Jeppsson, Peter
    Luleå University of Technology, Department of Engineering Sciences and Mathematics, Product and Production Development.
    An Empirical Study Of Information Exchange And Design Support In Product Family Development2014In: Proceedings of the ASME International Design Engineering Technical Conferences and Computers and Information in Engineering Conference, New York: American Society of Mechanical Engineers , 2014, article id DETC2014-34940Conference paper (Refereed)
  • 14.
    Sas, Daria
    et al.
    Luleå University of Technology, Department of Engineering Sciences and Mathematics, Product and Production Development.
    Larsson, Sofia
    Luleå University of Technology, Department of Engineering Sciences and Mathematics, Fluid and Experimental Mechanics.
    Dagman, Andreas
    Luleå University of Technology, Department of Engineering Sciences and Mathematics, Product and Production Development.
    Karlberg, Magnus
    Luleå University of Technology, Department of Engineering Sciences and Mathematics, Product and Production Development.
    Aggregation of solutions for Functional Product life cycle: review of results from the Faste Laboratory2015In: Procedia CIRP, ISSN 2212-8271, E-ISSN 2212-8271, Vol. 38, p. 216-221Article in journal (Refereed)
    Abstract [en]

    Functional Product (FP) can be viewed as a business concept which is aimed at offering a function or performance to customer on an agreed upon level of availability and cost as well as at providing incitements towards a sustainable growth. The development and operation of FP is a multidisciplinary and complex process. To support such process often advanced and creative solutions are required. Based on analysis of research conducted in the Faste Laboratory, this paper aggregates FP solutions consisting of existing methods, tools and models. Further, utilisation of FP solutions is discussed from the FP life cycle perspective.

  • 15.
    Wedel, Maria Knutsson
    et al.
    Chalmers University of Technology.
    Johansson, Björn
    Institutionen för produkt- och produktionsutveckling, produktutveckling.
    Dagman, Andreas
    Luleå University of Technology, Department of Engineering Sciences and Mathematics, Product and Production Development.
    Stahre, Johan
    Chalmers University of Technology.
    Sustainable Production Research: a Proposed Method to Design the Measures2011Conference paper (Refereed)
    Abstract [en]

    This paper describes a process to develop and apply measures in Sustainable Production Research. Specifically we have: A) Conducted workshops with researchers and industry on sustainability measures and monitored sustainability awareness of the participants through concept maps. B) Developed a proposal for measures based on literature reviews, results from workshops and interviews with researchers. C) Developed a generic method for evaluating sustainability measures related to production over time. 16 sustainability measures were defined as a starting set for the continuous monitoring. Concept mapping showed that participant have an uneven view on sustainability with emphasis on technology.

1 - 15 of 15
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