Optimal replacement policy of products with repair-cost threshold after the extended warranty  

作　　者：Lijun Shang Zhiqiang Cai 

机构地区：[1]School of Mechanical Engineering, Northwestern Polytechnical University, Xi’an 710072, China

出　　处：《Journal of Systems Engineering and Electronics》2017年第4期725-731,共7页系统工程与电子技术（英文版）

基　　金：supported by the National Natural Science Foundation of China(71471147;71631001);the Basic Research Project of Natural Science in Shaanxi Province(2015JQ7273);the 111 Project(B13044)

摘　　要：The reliability of the product sold under a warranty is usually maintained by the manufacturer during the warranty period. After the expiry of the warranty, however, the consumer confronts a problem about how to maintain the reliability of the product. This paper proposes, from the consumer's perspective, a replacement policy after the extended warranty, under the assumption that the product is sold under the renewable free replacement warranty (RFRW) policy in which the replacement is dependent on the repair-cost threshold. The proposed replacement policy is the replacement after the extended warranty is performed by the consumer based on the repair-cost threshold or preventive replacement (PR) age, which are decision variables. The expected cost rate model is derived from the consumer's perspective. The existence and uniqueness of the optimal solution that minimizes the expected cost rate per unit time are offered. Finally, a numerical example is presented to exemplify the proposed model.The reliability of the product sold under a warranty is usually maintained by the manufacturer during the warranty period. After the expiry of the warranty, however, the consumer confronts a problem about how to maintain the reliability of the product. This paper proposes, from the consumer's perspective, a replacement policy after the extended warranty, under the assumption that the product is sold under the renewable free replacement warranty (RFRW) policy in which the replacement is dependent on the repair-cost threshold. The proposed replacement policy is the replacement after the extended warranty is performed by the consumer based on the repair-cost threshold or preventive replacement (PR) age, which are decision variables. The expected cost rate model is derived from the consumer's perspective. The existence and uniqueness of the optimal solution that minimizes the expected cost rate per unit time are offered. Finally, a numerical example is presented to exemplify the proposed model.

关 键 词：extended warranty cost threshold minimal repair cost-based replacement age-based replacement 

分 类 号：O213.2[理学—概率论与数理统计]