Journal of Korean Society for Quality Management (품질경영학회지)

Korean Society for Quality Management (한국품질경영학회)
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A Risk Evaluation Procedure in FMEA for Failure Causes including Common Cause Failures

FMEA에서 공통원인고장이 포함될 경우의 고장원인에 대한 위험평가 절차

  • Kim, Byung Nam (Department of Systems Management and Engineering, Pukyong National University) ;
  • Kwon, Hyuck Moo (Department of Systems Management and Engineering, Pukyong National University) ;
  • Hong, Sung Hoon (Department of Industrial & Information Systems Engineering, Chonbuk National University) ;
  • Lee, Min Koo (Department of Information and Statistics, Chungnam National University)
  • 김병남 (부경대학교 시스템경영공학부) ;
  • 권혁무 (부경대학교 시스템경영공학부) ;
  • 홍성훈 (전북대학교 산업정보시스템공학과) ;
  • 이민구 (충남대학교 정보통계학과)
  • Received : 2018.05.28
  • Accepted : 2018.06.05
  • Published : 2018.06.30
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Abstract

Purpose: A risk evaluation procedure is proposed for common failure causes in FMEA(Failure Mode and Effects Analysis). The conventional FMEA does not provide a proper means to compare common failure causes with other failure causes. This research aims to develop a risk evaluation procedure in FMEA where common failure causes and other failure causes exist together. Methods: For each common failure cause, the effect of each combination of its resulting failures is recommended to be reevaluated considering their interactive worsening effect. And the probability that each combination of failures is incurred by the same common cause is also considered. Based on these two factors, the severity of each common cause is determined. Other procedures are similar to the conventional method. Results: The proposed procedure enables to compare and prioritize every failure cause. Thus, the common causes, each of which incurring two or more failures, and other causes, each of which is corresponding to one failure, can be fairly compared. Conclusion: A fair and proper way of comparing the common failure causes and other causes is provided. The procedure is somewhat complicated and requires more works to do. But it is worth to do.

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References

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