대한산업공학회지 (Journal of Korean Institute of Industrial Engineers)

  • 제36권2호
  • /
  • Pages.108-116
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  • 2010
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  • 1225-0988(pISSN)
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  • 2234-6457(eISSN)
대한산업공학회 (Korean Institute of Industrial Engineers)
권호 표지

비용 종속적인 개선지수를 고려한 최적 예방보전 정책

Optimal Preventive Maintenance Policy with Cost-dependent Improvement Factor

  • 홍석수 (국방기술품질원 기술평가팀) ;
  • 박종훈 (서울대학교 산업공학과) ;
  • 이창훈 (국방기술품질원 기술평가팀)
  • 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)
  • 투고 : 2010.03.29
  • 심사 : 2010.05.13
  • 발행 : 2010.06.01
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초록

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.

키워드

참고문헌

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