Condition-based maintenance with imperfect inspections for continuous degradation processes

Songhua Hao, Jun Yang and Christophe Bérenguer ()
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Songhua Hao: SCU - Sichuan University [Chengdu], School of Aeronautics and Astronautics [Chengdu] - SCU - Sichuan University [Chengdu]
Jun Yang: BUAA - Beihang University, School of Reliability and Systems Engineering [Beijing] - BUAA - Beihang University
Christophe Bérenguer: GIPSA-SAFE - GIPSA - Safe, Controlled and Monitored Systems - GIPSA-PAD - GIPSA Pôle Automatique et Diagnostic - GIPSA-lab - Grenoble Images Parole Signal Automatique - CNRS - Centre National de la Recherche Scientifique - UGA - Université Grenoble Alpes - Grenoble INP - Institut polytechnique de Grenoble - Grenoble Institute of Technology - UGA - Université Grenoble Alpes

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Abstract: A condition-based maintenance (CBM) strategy is now recognized as an efficient approach to perform maintenance at the best time before failures so as to save lifetime cycle cost. For continuous degradation processes, a significant source of variability lies in measure- ment errors caused by imperfect inspections, and this may lead to "false positive" or "false negative" observations, and consequently to inopportune maintenance decisions. To the best of our knowledge, researches on CBM optimization with imperfect inspections remain limited for continuous degradation processes, even though the subject is of practical inter- est for the implementation of a CBM policy. Imperfect inspections are indeed imperfect but still return interesting information on the system degradation level, and making them per- fect can be expensive. Therefore, we analyze the economic performance of a maintenance policy with imperfect inspections, and compare it with the classical policy with perfect inspections to see which policy offers the best benefit in a given situation. Furthermore, a CBM policy with a two-stage inspection scheme is proposed to take benefit of mixing both perfect and imperfect inspections in the same maintenance policy. Through numerical ex- periments and a real case study, it is shown that the policy with imperfect inspections can be better than the classical one, and that the proposed policy with a two-stage inspection scheme always leads to the minimum long run maintenance cost rate.

Keywords: Continuous degradation process; condition-based maintenance; measurement error; imperfect inspection; two-stage inspection scheme; long run cost rate (search for similar items in EconPapers)
Date: 2020-10
Note: View the original document on HAL open archive server: https://hal.science/hal-02860252v1
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Citations: View citations in EconPapers (11)

Published in Applied Mathematical Modelling, 2020, 86, pp.311-334. ⟨10.1016/j.apm.2020.05.013⟩

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Persistent link: https://EconPapers.repec.org/RePEc:hal:journl:hal-02860252

DOI: 10.1016/j.apm.2020.05.013

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