JOURNAL OF SHANDONG UNIVERSITY(NATURAL SCIENCE) ›› 2023, Vol. 58 ›› Issue (5): 76-83.doi: 10.6040/j.issn.1671-9352.0.2021.407

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Reliability evaluation for multi-component competing failure system based on uncertainty theory

WEN Yanqing1, LIU Baoliang1*, SHI Haiyan1, CHEN Jianhui2, FENG Yuejiao1   

  1. 1. College of Mathematics and Statistics Science, Shanxi Datong University, Shanxi 037009, Datong, China;
    2. China North Standardization Center, Beijing 100089, China
  • Published:2023-05-15

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Abstract: To analysis the reliability of multi-component competing failure system with little or no historical failure data, and determine the effects of external shocks on the internal wear degradation, the reliability models of series-competing failure and parallel-competing failure are developed based on uncertainty theory. Meanwhile, the belief reliability of the series-competing failure degradation system and the parallel-competing failure degradation systems are also derived. A micro-electro-mechanical systema(MEMS)are used to verify the correctness and validity of the proposed model. The results show that the system reliability is higher when the external shocks are independent of the internal wear degradation than when the external shocks dependent on internal wear degradation.

Key words: competing failure process, belief reliability, uncertainty theory, shock model

CLC Number: 

  • O213
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