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Mathematical Problems in Engineering
Volume 2013, Article ID 935984, 7 pages
Research Article

An Extensive QFD and Evaluation Procedure for Innovative Design

1Department of Industrial Design, National Kaohsiung Normal University, No. 62, Shenjhong Road, Yanchao District, Kaohsiung City 82446, Taiwan
2Department of Electronic Engineering, National Kaohsiung University of Applied Science, 415 Chien Kung Road, Sanmin District, Kaohsiung 80778, Taiwan
3Department of Industrial Design, National Cheng Kung University, No. 1, University Road, Huwei Township, Tainan City 701, Taiwan
4Department of Information Management, National Formosa University, No. 64, Wunhua Road, Huwei Township, Yunlin County 632, Taiwan

Received 15 September 2013; Accepted 21 October 2013

Academic Editor: Teen-Hang Meen

Copyright © 2013 Chang-Tzuoh Wu et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.


In this paper, a systematic innovation procedure has been developed based on quality function deployment and extension method. Besides, the evaluation method for design decision making has also been discussed and developed. The major procedure of QFD is to identify the customers’ needs for the product and then convert into appropriate technical measures to fulfill the needs based on the company’s competitive priorities. The priorities of product characteristics can be obtained by translating important technical measures. According to their characteristics, the prior engineering parameters will be identified and selected as the key requirements to redesign. This paper will focus on the integration of QFD and extension method. With the help of “matter element theory and extension method,” customer requirements (CRs) can be transferred into product design attributes more comprehensively and deeply. According to the idea of loss function of Taguchi quality design method, the criteria for design decision making have also been developed in this paper. An innovative design case, bicycle, successfully demonstrates that the proposed design process is feasible and efficient.