최소수리 보증을 갖는 시스템에 대한 연장된 보증 이후의 최적의 교체정책
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Recently, an extended warranty of a system following the expiration of the basic warranty is becoming increasingly popular to the user. In this respect, we suggest a replacement model following the expiration of extended warranty with minimal repair warranty from the user’s point of view in this paper. Under extended warranty, the failed system is minimally repaired by the manufacturer at no cost to the user during the original extended warranty period. As a criterion of the optimality, we utilize the expected cost rate per unit time during the life cycle from the user’s perspective and suggest the optimal replacement period after extended warranty. Finally, a few numerical examples are given for illustrative purpose.