Journal of Korean Institute of Industrial Engineers (대한산업공학회지)

Korean Institute of Industrial Engineers (대한산업공학회)
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Optimal Preventive Maintenance Policy with Cost-dependent Improvement Factor

비용 종속적인 개선지수를 고려한 최적 예방보전 정책

  • Hong, Seok-Soo (Technology Evaluation Team, Defense Agency for Technology and Quality) ;
  • Park, Jong-Hun (Department of Industrial Engineering, Seoul National University) ;
  • Lie, Chang-Hoon (Technology Evaluation Team, Defense Agency for Technology and Quality)
  • 홍석수 (국방기술품질원 기술평가팀) ;
  • 박종훈 (서울대학교 산업공학과) ;
  • 이창훈 (국방기술품질원 기술평가팀)
  • Received : 2010.03.29
  • Accepted : 2010.05.13
  • Published : 2010.06.01
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Abstract

The maintenance of a deteriorating system is often imperfect. Previous studies have shown that the imperfect preventive maintenance (PM) can reduce the wear out and aging effects of deteriorating systems to a certain level between the conditions of as good as new and as bad as old. In this paper, we employ the concept of the improvement factor in investigating two optimal PM policies; failure limit policy and periodic PM policy. We redefine the improvement factor model as a function of the cost of PM, using this concept, we derive the conditions of optimal PM policies and formulate expressions to compute the expected cost rate. Based on this information, the determination of the maintenance policies which minimize the cost rate is examined. Numerical examples for the Weibull distribution case are also given.

Keywords

References

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