Availability Optimization of Multicomponent Products with Economic Dependence under Two-Dimensional Warranty

Enzhi Dong,Xiaona Zhang,Zhonghua Cheng,Rongcai Wang,Daqing Gong

doi:10.1155/2021/2492430

Enzhi Dong, Xiaona Zhang + Show 3 more

Open Access

https://doi.org/10.1155/2021/2492430

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Abstract

For multicomponent products, the maintenance of every component separately will increase the downtime and reduce the availability of products during the warranty period. To solve this problem, the economic dependence between the components is considered in this paper. Firstly, a single-component two-dimensional (2D) preventive maintenance (PM) availability model is established, and the simulated annealing algorithm is adopted to calculate the optimal 2D PM interval to achieve the maximal availability of any single component. Then, to ensure that the warranty cost of each component does not exceed the budget, the PM benchmark interval is introduced, and the PM work is optimized following the method of grouping maintenance. Based on this, the 2D preventive grouping maintenance availability model of multicomponent products is established. Finally, an example is given to verify the proposed method, and the results indicate that the proposed method increases the availability of multicomponent products during the 2D warranty period.

Highlights

According to the dimension of warranty period, warranty can be divided into one-dimensional warranty, two-dimensional (2D) warranty, and even multidimensional warranty. 2D warranty refers to the warranty period determined by time and usage, and it is usually used for automobiles, construction machinery, and other durable goods
To reduce the downtime caused by the preventive maintenance (PM) of multiple components in series and improve the availability of products, the method of grouping maintenance is used to optimize the PM of every single component, which mainly optimizes the PM time and usage array of every single component
The PM work among different components is combined, and the PM interval of every single component is reset to increase the availability of the product during the warranty period. e research results provide a scientific basis and quantitative analysis method for the formulation of complex equipment grouping maintenance strategy under 2D PM service

Summary

Introduction

He et al [47] established a 2D extended warranty cost model based on product failure process according to different utilization rates of consumers, purchase time of extended warranty, and PM options. E combination of PM work of each component is conducive to reducing warranty cost and downtime and improving product availability.

Results

Conclusion