Optimal Post-Warranty Maintenance Policies with the Mission Duration  
Author Jiajia Cai


Co-Author(s) Xufeng Zhao


Abstract A large number of products are designed to execute the mission. In mission-oriented systems, the mission duration can’t be ignored in maintenance modeling. Otherwise, the preventive replacement time might be planned during executing the mission and resulting the interruption of the mission. From the perspective of users, it’s interesting and significant to estimate the optimal post-warranty maintenance opportunities by taking the mission duration into consideration. Time-based replacement policies with the mission duration during the post-warranty period are discussed by minimizing the cost rate. Optimal planned replacement time and mission duration are given analytically and numerically. In addition, replacement first and replacement last policies are alternative to choose. Case illustrations of maintaining the warranted lead-acid battery pack are given based on the assumed data. As results show, the models in this paper can provide better guidance for maintaining the lead-acid battery pack during post-warranty period to extend the lifetime and reduce carbon emissions.


Keywords Mission duration, Post-warranty, Time-based replacement, Mission-oriented systems
    Article #:  RQD27-83

Proceedings of 27th ISSAT International Conference on Reliability & Quality in Design
Virtual Event

August 4-6, 2022