This article proposes the modeling of decision making in the conceptual design stage of a product as a multi-criteria decision making analysis. | Pugh matrix and aggregated by extent analysis using trapezoidal fuzzy number for assessing conceptual designs Decision Science Letters 9 2020 21 36 Contents lists available at GrowingScience Decision Science Letters homepage dsl Pugh matrix and aggregated by extent analysis using trapezoidal fuzzy number for assessing conceptual designs Olayinka Olabanjia and Khumbulani Mpofua a Tshwane University of Technology Pretoria West South Africa South Africa CHRONICLE ABSTRACT Article history Deciding conceptual stage of engineering design to identify an optimal design concept from a Received May 7 2019 set of alternatives is a task of great interest for manufacturers because it has an impact on Received in revised format profitability of the manufacturing firms in terms of extending product demand life cycle and August 25 2019 gaining more market share. To achieve this task design concepts encompassing all required Accepted August 25 2019 Available online attributes are developed and the decision is made on the optimal design concept. This article August 25 2019 proposes the modeling of decision making in the conceptual design stage of a product as a multi- Keywords criteria decision making analysis. The proposition is based on the fact that the design concepts Conceptual design can be decided based on considering the available design features and various sub-features under Multicriteria Decision-making each design feature. Pairwise comparison matrix of fuzzy analytic hierarchy process is applied Fuzzified Pugh Matrix to determine the weights for all design features and their sub-features depending on the Synthetic Extent Evaluation importance to the design features to the optimal design and contributions of the sub-features to Trapezoidal fuzzy number the performance of the main design features. Fuzzified Pugh matrices are developed for assessing the availability of the sub-features in the design concept. The cumulative from the Pugh matrices .
