Int J Performability Eng ›› 2019, Vol. 15 ›› Issue (1): 45-55.doi: 10.23940/ijpe.19.01.p5.4555

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Fuzzy Fault Tree Analysis based on Interpretive Structure Model and Binary Connection Numbers

Honghua Sun, Hongxia Chen(), Qingyang Li, and Xudong Chen   

  1. School of Mechanical Engineering,Inner Mongolia University of Technology, Hohhot, 010051, China
  • Revised on ; Accepted on
  • Contact: Chen Hongxia E-mail:chenhx@imut.edu.cn
  • About author:Honghua Sun is an associate professor in the School of Mechanical Engineering at Inner Mongolia University of Technology. She received her M.S. degree from Harbin Institute of Technology in 2008. Her current research interests include reliability data analysis and reliability evaluation.|Hongxia Chen is an associate professor in the School of Mechanical Engineering at Inner Mongolia University of Technology. She received her M.S. degree in 2008. Her current research interests include reliability data analysis and reliability evaluation.|Qingyang Li is a postgraduate student in the School of Mechanical Engineering at Inner Mongolia University of Technology. He received his bachelor’s degree from Inner Mongolia University of Technology in 2016. His current research interests include reliability data analysis and reliability evaluation.|Xudong Chen is a postgraduate student in the School of Mechanical Engineering at Inner Mongolia University of Technology. He received his bachelor’s degree from Inner Mongolia University of Technology in 2016. His current research interests include reliability data analysis and reliability evaluation.

Abstract:

Building a fault tree and calculating the sequence of bottom eventsimportance degree are key steps in fault diagnosis. Two improvements are made to the fuzzy fault tree in this study. The first is building the fault tree using Interpretive Structure Modeling (ISM)technology. The second istransforming triangular fuzzy numbers into binary connection numbers (BCN)through the uncertainty theory of set pair analysis,where the certainty coefficient is determined by the median of the triangular fuzzy number and the uncertainty coefficient is determined by the interval value described bythe upper and lower limitations.The formula of failure probability of the top event and the formula of probability importance of the bottom event are deduced with the binary connection number. This method reduces the calculation amount.A case studyis carried out to verify the feasibility and effectiveness of the method.

Key words: fault tree, triangular fuzzy number, interpretive structure modeling (ISM), binary connection number (BCN)