Applying lean principles and set-based approaches in product development
Doktorsavhandling, 2022
The research approaches used are:
- a two-case study (Yin, 2009),
- the design research methodology (Blessing and Chakrabarti, 2009), and
- the scientific work paradigm (Jørgensen, 1992),
the last two combined with multiple case studies. Also, elements of action research (Oosthuizen, 2002) are used.
The results show that the principles and introduction of LPD were experienced as positive by participating practitioners in the conducted case studies. It was furthermore shown that SBD can be introduced and applied in a workshop at team level within a time frame of one or two working days if the design problem at hand is not too complex. Another result is that SBD can be combined with and supported by established methods such as creative and systematic methods for synthesis, enhanced function-means modelling, axiomatic design, extended causal diagrammes, interactive evolutionary algorithms (IEA) and Pugh matrices for generation, analysis, evaluation and reduction of a solution space of design alternatives and variants of these. Both qualitative and quantitative requirements can be handled.
The conclusions are that a transformation to LPD is facilitated by information about good examples and internal support by management. Also, the existence of a lean enthusiast in the organization and an appropriate implementation plan supports a transformation to LPD. A function to maintain the LPD system as well as influence of the lean principles are valuable guides on how to use LPD.
Also concluded is that a seamless, efficient process, applying set-based principles, for synthesis, evaluation, and reduction of a solution space of design alternatives can be created by combining enhanced function-means modelling, morphological matrices, axiomatic design, causal diagrammes and Pugh matrices. Such a compound of methods can be introduced and applied in a workshop at team level within a time frame of one to two days when solving well-known and not too complex design problems. The workshop should be facilitated by an expert on the methods used and initiated and surveyed by a team manager. Furthermore, a solution space of parameterised design variants, with criteria that are either qualitative or too complicated to be numerically defined, can be generated, evaluated and reduced in such a process. By using a defined set of functional and constraining criteria, and applying axiomatic design and IEA, a variant solution space can be generated and refined. A set-up of the IEA that does not overburden the user should be preferred.
Set-based design
Controlled convergence
Concept development
Lean product development
Lean transformation
Industrial introduction
Författare
Mikael Ström
RISE Research Institutes of Sweden
Chalmers, Industri- och materialvetenskap, Produktutveckling
Instant Set-Based Design, an Easy Path to Set-Based Design
Procedia CIRP,;Vol. 50(2016)p. 234-239
Paper i proceeding
Unveiling fundamental relationships in industrial product development
Procedia CIRP,;Vol. 50(2016)p. 204-209
Paper i proceeding
Development of a methodology to implement set-based design in a day
Proceedings of the DESIGN 2016 14th International Design Conference,;(2016)
Paper i proceeding
Transformation to Lean Product Development – Approaches at Two Automotive Suppliers
12th International Design Conference, DESIGN 2012; Dubrovnik; Croatia; 21 May 2012 through 24 May 2012,;(2012)p. 113-122
Paper i proceeding
Ström, M., Wolff, K., Jean-Jean, J., Gustafsson, G., Isaksson, O., and Johannesson, H. (2022) “A set-based-inspired design process supported by axiomatic design and interactive evolutionary algorithms”, Accepted for publication in the International Journal of Product Development.
Ström, M., Gustafsson, G., and Johannesson, H., (2022), "Efficient Set-Based-inspired generation and elimination of alternative design concepts"
Ämneskategorier
Maskinteknik
ISBN
978-91-7905-699-5
Doktorsavhandlingar vid Chalmers tekniska högskola. Ny serie: 5165
Utgivare
Chalmers
Sunnan- och Nordanvinden, Hörsalsvägen 7a, våning 5
Opponent: Professor Tobias Larsson, Blekinge Tekniska Högskola, Sverige