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Seyed Hossein Iranmanesh, Mohammad Hossein Salimi

Effect of using Fuzzy Trapezoidal Numbers for Weighting Scale in QFD

Track: D2

Abstract:
Generally, in QFD charts the relationships between Customer Attributes and Engineering Characteristics can be defined using three linguistic variables as Weak, Medium and Strong. Reversing in priority of results (rank reversing) is possible when various scales such as 1-3-5 or 1-3-9 are employed. In this paper, fuzzy numbers with Trapezoidal and Triangular membership function are applied to a sample 6*2 QFD chart. The results obtained from a simulation experiment and ANOVA test, have shown reduction in rank reversing and sensitivity of results to the scale changing on the sample chart.

Authors:
Seyed Hossein Iranmanesh is a Ph.D. candidate at Amikabir University of Technology, Tehran, Iran. He received his B.S. and M.S. degrees in industrial engineering from Sharif University of Technology, Tehran, Iran. His research interests are in QFD, TRIZ, Concept Design and Fuzzy Set Modeling.

Mohammad Hossein Salimi is an associate professor of industrial engineering at Amirkabir University of Technology, Tehran, Iran. He received Ph.D. degree in industrial engineering from Bradford , UK. He has written and translated some books and papers about TQM, Kaizen and Productivity in Persian and in English. His research interests are in the areas of Quality, Productivity, Concurrent Engineering and Reliability.

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