دانلود رایگان مقاله ارزیابی مفهوم طراحی محصول با مجموعه های rough و روش VIKOR

Abstract

Design concept evaluation is one of the most important phases in the early stages of the design process as it not only significantly affects the later stages of the design process but also influences the success of the final design solutions. The main objective of this work is to reduce the imprecise content of customer evaluation process and thus, improve the effectiveness and objectivity of the product design. This paper proposes a novel way of performing design concept evaluations where instead of considering cost and benefit characteristics of design criteria, the work identifies best concept which satisfy constraints imposed by the team of designers on design criteria’s as well as fulfilling maximum customers’ preferences. In this work, the rough number enabled modified Vlsekriterijumska Optimizacija I Kompromisno Resenje (VIKOR) method for design concept evaluation is developed by modifying the extended VIKOR method with interval numbers. The proposed technique is labeled as modified rough VIKOR (MR-VIKOR) analysis. The work primarily involves two phases of concept evaluation. In the first phase, relative importance ranking and initial weights of design criteria are computed through the importance assigned to each design criteria by the designers or the decision makers (DM); and in the second phase, customers’ preferences to the generated user needs are captured in the form of rough numbers. The relative importance ranking computed in first phase along with customers’ preferences is incorporated in the second phase to select the best concept.

8. Conclusions This work proposes a rough number enabled VIKOR method with the objective of developing a systematic framework for concept evaluation process and to reduce subjectivity associated with this process. In the proposed method, the vague, raw and subjective perceptions of designers’ and continuously changing preferences of customers are captured and represented in the form of rough numbers. The new concept of incorporating importance ranking of design criteria in the framework of concept evaluation process along with customers’ preferences provides a novel alternative for this critical task during early stages of product development. The proposed method selects the best concept, which satisfies both the constraints imposed by the designers and satisfies the preferences of customers. The results of the case study presented in this work, shows that proposed method provides novel and more effective design alternative ranking framework, while considering both designers’ and customers’ conflicting thoughts. One of the limitation of the proposed best concept might be that selected concept might be more close to designers’ expectation than the customers’ expectations.