Condition-based inspection, component reallocation and replacement optimization of two-component interchangeable series system

Liying Wang, Yushuang Song, Wenhua Zhang and Xiaoliang Ling

Reliability Engineering and System Safety, 2023, vol. 230, issue C

Abstract: In small radius curves of railway lines, the inner side and outer side rails are connected in series. The side friction taken by the outer side rail is much greater than that of the inner one. Hence, the degradation processes of them are unbalanced and component reallocation actions are implemented to prolong the lifetime of the system in the practical engineering. Motivated the aforementioned operating and maintenance processes, this paper introduces a condition-based inspection, component reallocation and replacement models for two-component interchangeable series system. The degradation processes of two components are described by Gamma processes, and their states are identified by periodic inspections. When the maximum degradation level of two components exceeds the given control limits, corrective replacement, preventive replacement and inspection interval half strategies are taken. Component reallocation is performed when the degradation level of the component with higher degradation rate exceeds the threshold. Taking the long-term average cost per unit time as the objective function, the inspection interval and reallocation thresholds are jointly optimized. Numerical examples are provided to show the effectiveness of the joint of component reallocation and inspection interval half.

Keywords: Component reallocation; Functionally-interchangeable components; Condition-based replacement; Inspection interval half (search for similar items in EconPapers)
Date: 2023
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Citations: View citations in EconPapers (5)

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Persistent link: https://EconPapers.repec.org/RePEc:eee:reensy:v:230:y:2023:i:c:s0951832022005221

DOI: 10.1016/j.ress.2022.108907

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