Random Maintenance Strategy Modeling of Warranted Products with Reliability Heterogeneity

Chengye Ma, Yongjun Du, Lijun Shang (), Li Yang and Kaiye Gao
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Chengye Ma: School of Science, Lanzhou University of Technology, Lanzhou 730050, China
Yongjun Du: School of Economics and Management, Lanzhou University of Technology, Lanzhou 730050, China
Lijun Shang: School of Quality Management and Standardization, Foshan University, Foshan 528000, China
Li Yang: School of Reliability and Systems Engineering, Beihang University, Beijing 100191, China
Kaiye Gao: School of Management & Economics, Beijing Information Science and Technology University, Beijing 100192, China

Sustainability, 2023, vol. 15, issue 18, 1-19

Abstract: Using monitored job cycles to design and model random maintenance strategies for ensuring life-cycle reliability has been extensively researched. The reliability heterogeneity over the life cycle has been ignored universally in this type of strategy. In this paper, using two different areas of regions that can screen reliability, two random maintenance strategies were customized for the life-cycle reliabilities of warrantied products with monitored job cycles to be ensured based on reliability heterogeneity. In the case of using minimal repair, the first one was flexibly customized depending on whether the first failure occurs in the region consisting of limited job cycles or a period of warranty service, whichever occurs first. Such a strategy is called flexible repair warranty first (FRWF) and can be used to ensure warranty-stage reliability during a product’s life cycle. The FRWF strategy is modeled from the perspectives of cost and time measures. Based on whether the first failure of the product through its FRWF occurs in another region, random periodic replacement (RPR) and classic periodic replacement (CPR) are triggered to customize the second one, which is named bivariate customized random maintenance (BCRM) because two decision variables are considered. The BCRM and its variants are modeled from the perspectives of the average cost rates. Finally, numerical analysis of some of the customized strategies was performed from the numerical perspective. Numerical analysis showed that the presented FRWF is superior to the classic free repair warranty (FRW) strategy because the servicing time of the presented FRWF strategy is longer than the servicing time of the classic FRW strategy at the same cost.

Keywords: reliability heterogeneity; job cycle; warranty; periodic replacement; cost rate (search for similar items in EconPapers)
JEL-codes: O13 Q Q0 Q2 Q3 Q5 Q56 (search for similar items in EconPapers)
Date: 2023
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (1)

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