Reliability-Based Opportunistic Maintenance Modeling for Multi-Component Systems with Economic Dependence under Base Warranty

Rongcai Wang,Liqing Rong,Chiming Guo,Enzhi Dong,Zhonghua Cheng,Chun Wei

doi:10.1155/2021/5541902

Rongcai Wang, Liqing Rong + Show 4 more

Open Access

https://doi.org/10.1155/2021/5541902

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Abstract

Maintenance usually plays a key role in controlling a multi-component production system within normal operations. Furthermore, the failure of components in the production system will also cause large economic losses for users due to the shutdown. Meanwhile, manufacturers of the production system will be confronted with the challenges of the warranty cost. Therefore, it is of great significance to optimize the maintenance strategy to reduce the downtime and warranty cost of the system. Opportunistic maintenance (OM) is a quite important solution to reduce the maintenance cost and improve the system performance. This paper studies the OM problem for multi-component systems with economic dependence under base warranty (BW). The irregular imperfect preventive maintenance (PM) is performed to reduce the failure rate of components at a certain PM reliability threshold. Moreover, the OM optimization model is developed to minimize the maintenance cost under the optimal OM reliability threshold of each component. A simulated annealing (SA) algorithm is proposed to determine the optimal maintenance cost of the system and the optimal OM threshold under BW. Finally, a numerical example of a belt conveyor drive device in a port is introduced to demonstrate the feasibility and advantages of the proposed model in maintenance cost optimization.

Highlights

IntroductionWith the rapid development of modern production technology, manufacturers gradually switch their attention from product-oriented to service-oriented to highlight the brand value and capture more market share [1]
As a promotion role, a more attractive warranty policy can obtain higher customer satisfaction and capture more market share [9, 10]. erefore, manufacturers are faced with a balance between warranty cost and boosting product demand when formulating the warranty policies. erefore, optimizing the maintenance strategy to reduce the maintenance cost during the warranty period is well worthy of research
Warranty can be divided into two categories according to the time sequence: base warranty (BW) and extended warranty (EW) [11]

Summary

Introduction

With the rapid development of modern production technology, manufacturers gradually switch their attention from product-oriented to service-oriented to highlight the brand value and capture more market share [1]. In such a situation, an increasing number of products are sold with attractive warranty policies [2]. As a protection role, warranty is an obligation specified in the maintenance contract that manufacturers must repair or replace the failed products free of charge to customers during the warranty period [7]. As a promotion role, a more attractive warranty policy can obtain higher customer satisfaction and capture more market share [9, 10]. Customers can choose whether to purchase EW or not at the end of BW [14]

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Results

Conclusion