Concept design for assembly-a design theory perspective

This paper addresses the applicability of current design-for-assembly (DFA) approaches within the early stages of the design process based on a design theory approach. The paper initially outlines the existing problems in relating DFA approaches to product development. The proposed solution is the classification of DFA within the product development process (PDP) based on a four level design model. Three DFA integration mechanisms are introduced and related to the model as are the three modes of DFA application. The field of concept-DFA is considered in the context of the model. Discrepancies in terminology are outlined especially between industry and academia. Different DFA approaches are modelled and existing research in the field of concept DFA is outlined. Weaknesses with both existing DFA approaches and the design model are discussed. Finally future projects addressing the existing weaknesses in DFA as highlighted by the model are discussed.