Failure Mode and Effects Analysis Using Generalized Mixture Operators

Subject Areas : Tectonostratigraphy

mahdi  shaghaghi ¹ (Department of Industrial engineering, Qazvin University, Iran)
Kamran  Rezaie ² (Department of Industrial engineering, National University, Iran)

Received: 2011-09-02 Accepted : 2012-02-27 Published : 2012-09-30

Keywords: Failure mode and effects analysis (FMEA), Generalized mixture operators, Fuzzy set, Risk Priority Number,

Abstract :

Failure mode and effects analysis (FMEA) is a method based on teamwork to identify potential failures and problems in a system, design,process and service in order to remove them. The important part of this method is determining the risk priorities of failure modes using therisk priority number (RPN). However, this traditional RPN method has several shortcomings. Therefore, in this paper we propose a FMEAwhich uses generalized mixture operators to determine and aggregate the risk priorities of failure modes. In a numerical example, a FMEAof the LGS gas type circuit breaker product in Zanjan Switch Industries in Iran is presented to further illustrate the proposed method. Theresults show that the suggested approach is simple and provides more accurate risk assessments than the traditional RPN.