Paper Info
Title
Risk evaluation in failure mode and effects analysis using fuzzy weighted geometric mean
Abstract
Failure mode and effects analysis (FMEA) has been extensively used for examining potential failures in products, processes, designs and services. An important issue of FMEA is the determination of risk priorities of the failure modes that have been identified. The traditional FMEA determines the risk priorities of failure modes using the so-called risk priority numbers (RPNs), which require the risk factors like the occurrence (O), severity (S) and detection (D) of each failure mode to be precisely evaluated. This may not be realistic in real applications. In this paper we treat the risk factors O, S and D as fuzzy variables and evaluate them using fuzzy linguistic terms and fuzzy ratings. As a result, fuzzy risk priority numbers (FRPNs) are proposed for prioritization of failure modes. The FRPNs are defined as fuzzy weighted geometric means of the fuzzy ratings for O, S and D, and can be computed using alpha-level sets and linear programming models. For ranking purpose, the FRPNs are defuzzified using centroid defuzzification method, in which a new centroid defuzzification formula based on alpha-level sets is derived. A numerical example is provided to illustrate the potential applications of the proposed fuzzy FMEA and the detailed computational process of the FRPNs.
Year
DOI
Venue
2009
10.1016/j.eswa.2007.11.028
Expert Syst. Appl.
Keywords
Field
DocType
fuzzy risk priority numbers,fuzzy risk priority number,effects analysis,failure mode and effects analysis,failure mode,proposed fuzzy fmea,centroid defuzzification,risk priority,fuzzy linguistic term,fuzzy weighted geometric mean,fuzzy logic,risk evaluation,fuzzy variable,risk factor,alpha-level set,fuzzy rating,failure mode and effect analysis,risk factors,geometric mean,level set,production process
Failure mode and effects analysis,Data mining,Defuzzification,Fuzzy classification,Ranking,Computer science,Fuzzy set operations,Fuzzy logic,Weighted geometric mean,Fuzzy number
Journal
Volume
Issue
ISSN
36
2
Expert Systems With Applications
Citations 
PageRank 
References 
96
4.40
11
Authors
4
Name
Order
Citations
PageRank
Ying-Ming Wang13256166.96
Kwai-Sang Chin2103354.69
Gary Ka Kwai Poon32099.05
Jian-Bo Yang43832203.05