Journal of Korean Society for Quality Management (품질경영학회지)

Korean Society for Quality Management (한국품질경영학회)
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A Spare Ordering Policy for Preventive Replacement with Repair

수리가능한 품목의 예방교체를 위한 주문정책

  • 임성욱 (대진대학교 산업경영공학과) ;
  • 박영택 (성균관대학교 시스템경영영공학과)
  • Received : 2011.09.16
  • Accepted : 2011.11.17
  • Published : 2011.12.31
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Abstract

This paper presents a spare ordering policy for preventive replacement with minimal repair. To analyze the ordering policy, the failure process is modeled by a non-homogeneous Poisson process. Introducing the ordering, repair, downtime, replacement costs and salvage value, we derive the expected cost effectiveness as a criterion of optimality when the lifetime and lead times for the regular and expedited orders are generally distributed random variables. It is shown that, under certain conditions, there exists a finite and unique optimum ordering time which maximizes the expected cost effectiveness. A numerical example is also included to explain the proposed model.

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References

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