한국신뢰성학회지:신뢰성응용연구 (Journal of Applied Reliability)

  • 제15권1호
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  • Pages.6-11
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  • 2015
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  • 1738-9895(pISSN)
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  • 2733-8320(eISSN)
한국신뢰성학회 (The Korean Reliability Society)
권호 표지

2차원 무료 보증이 종료된 이후의 보전정책

Maintenance Policies Following the Expiration of Two-Dimensional Free Replacement Warranty

  • 김호균 (동의대학교 산업경영공학과)
  • Kim, Ho-Gyun (Department of Industrial & Management Engineering, Dong-Eui University)
  • 투고 : 2014.10.05
  • 심사 : 2015.01.07
  • 발행 : 2015.03.25
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초록

Maintenance plays an important role in keeping product availability, reliability and quality at an appropriate level. In this paper, two-types of maintenance policies are studied following the expiration of two-dimensional (2D) free replacement warranty. Both the fixed-maintenance-period policy and the variable-maintenance-period policy are based on a specified region of the warranty defined in terms of age and usage where all failures are minimally repaired. An accelerating failure time (AFT) model is used to allow for the effect of usage rate on product degradation. The maintenance model that arises following the expiration of 2D warranty is discussed. The expected cost rates per unit time from the user's point of view are formulated and the optimal maintenance policies are determined to minimize the expected cost rate to the user. Finally numerical examples are given to illustrate the optimal maintenance polices.

키워드

참고문헌

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