Journal of Xidian University

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Failure mode effect and critical analysis optimized by the accelerated degradation test

CHEN Ran;LIAN Guangyao;SUN Jiangsheng;LI Huijie   

  1. (Ordnance Engineering College, Ordnance Technology Institute, Shijiazhuang 050003, China)
  • Received:2016-04-08 Online:2017-06-20 Published:2017-07-17

Abstract:

An improved failure mode effect and critical analysis(FMECA) method optimized by the accelerated degradation test is presented in order to solve the subjectivity and blindness problems caused by the existing FMECA method that relies on manual experience. First, weak links and the properties and degradation failure characteristics of the module could be acquired by finite element simulation analysis. Then the typical failure modes and the occurrence probability could be obtained according to the accelerated degradation test. Finally, the FMECA could be accomplished. Case study shows that the optimized method could provide effective complement and correction for the traditional FMECA,which could provide more diverse and reliable alternative fault samples.

Key words: failure mode effect and critically analysis, line replaceable module, accelerated degradation test, finite element analysis