Optimum component reallocation and system replacement maintenance for a used system with increasing minimal repair cost

Yuqiang Fu, Xiaoyan Zhu and Xiaoyang Ma

Reliability Engineering and System Safety, 2020, vol. 204, issue C

Abstract: Motivated by the economics of a used system, the paper studies a component reallocation (CR) based maintenance policy for a used and repairable system with functionally interchangeable components. The policy, denoted as optimum CR and system replacement maintenance, incorporates the actions of CR and system replacement to minimize the expected maintenance cost per unit time. The components experience nonhomogeneous degradation with different failure rates and different minimal repair costs because of different position conditions. The minimal repair costs are increasing over time. The CR action reallocates the functionally interchangeable components to balance degradation. The system replacement action replaces system by a new or used one. A mixed binary nonlinear optimization model for the policy is established to determine the optimal time and assignment for CR and the optimal time for system replacement. Further, we analyze the expected maintenance cost per unit time over the used age of system and some special cases. Finally, specializing the failure rate by Weibull distribution and the minimal repair cost by inversely proportional to the component reliability, numerical examples show the efficiency of CR compared to the system replacement maintenance without CR.

Keywords: Used system; Component reallocation; System replacement; Maintenance; Functionally interchangeable components; Nonhomogeneous degradation (search for similar items in EconPapers)
Date: 2020
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (9)

Downloads: (external link)
http://www.sciencedirect.com/science/article/pii/S0951832020306384
Full text for ScienceDirect subscribers only

Related works:
This item may be available elsewhere in EconPapers: Search for items with the same title.

Export reference: BibTeX RIS (EndNote, ProCite, RefMan) HTML/Text

Persistent link: https://EconPapers.repec.org/RePEc:eee:reensy:v:204:y:2020:i:c:s0951832020306384

DOI: 10.1016/j.ress.2020.107137

Access Statistics for this article

Reliability Engineering and System Safety is currently edited by Carlos Guedes Soares

More articles in Reliability Engineering and System Safety from Elsevier
Bibliographic data for series maintained by Catherine Liu ().