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Mathematical Problems in Engineering
Volume 2016, Article ID 4512383, 11 pages
http://dx.doi.org/10.1155/2016/4512383
Research Article

A Modified Model of Failure Mode and Effects Analysis Based on Generalized Evidence Theory

1School of Electronics and Information, Northwestern Polytechnical University, Xi’an, Shaanxi 710072, China
2Automotive Engineering Institute, Guangzhou Automobile Group Co., Ltd., Guangzhou, Guangdong 511434, China

Received 28 April 2016; Revised 15 June 2016; Accepted 30 June 2016

Academic Editor: Jianbing Ma

Copyright © 2016 Deyun Zhou 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.

Abstract

Due to the incomplete knowledge, how to handle the uncertain risk factors in failure mode and effects analysis (FMEA) is still an open issue. This paper proposes a new generalized evidential FMEA (GEFMEA) model to handle the uncertain risk factor, which may not be included in the conventional FMEA model. In GEFMEA, not only the conventional risk factors, the occurrence, severity, and detectability of the failure mode, but also the other incomplete risk factors are taken into consideration. In addition, the relative importance among all these risk factors is well addressed in the proposed method. GEFMEA is based on the generalized evidence theory, which is efficient in handling incomplete information in the open world. The efficiency and some merit of the proposed method are verified by the numerical example and a real case study on aircraft turbine rotor blades.