Journal of the Korean Society of Manufacturing Process Engineers (한국기계가공학회지)

The Korean Society of Manufacturing Process Engineers (한국기계가공학회)
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A Study on the Quantitative Determination of Failure Effect Probability for Criticality Analysis on System

시스템의 치명도 분석을 위한 고장영향확률 정량화 방안 연구

  • Lee, Myeong-seok (Department of Mechanical System Engineering, Kumoh National Institute of Technology) ;
  • Choi, Seong-Dae (Department of Mechanical System Engineering, Kumoh National Institute of Technology) ;
  • Hur, Jang-wook (Department of Mechanical System Engineering, Kumoh National Institute of Technology)
  • 이명석 (금오공과대학교 기계시스템공학과) ;
  • 최성대 (금오공과대학교 기계시스템공학과) ;
  • 허장욱 (금오공과대학교 기계시스템공학과)
  • Received : 2019.06.10
  • Accepted : 2019.07.23
  • Published : 2019.08.31
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Abstract

The inter-development of FMECA is very important to assess the effect of potential failures during system operation on mission, safety and performance. Among these, criticality analysis is a core task that identifies items with high risk and selects the analyzed objects as the key management targets and reflects their effects to the design optimization. In this paper, we analyze the theory related to criticality analysis following US military standard, and propose a method to quantify the failure effect probability for objective criticality analysis. The criticality analysis according to the US military standard depends on the subjective judgment of the failure probability. The methodology for quantifying the failure effect probability is presented by using the reliability theory and the Bayes theorem. The failure rate is calculated by applying the method to quantify failure effect probability.

Keywords

References

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