Replacement and imperfect repair of deteriorating system: Study of a CBM policy and impact of repair efficiency

Omshi, E. Mosayebi; Grall, Antoine

doi:10.1016/j.ress.2021.107905

Cited by 12 publications

(1 citation statement)

References 31 publications

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“…The degradation restoration model considers that after the system undergoes the imperfect maintenance, the degradation can be repaired in a certain proportion. However, some scholars believe that the maintenance recovery factor is random, 8 so the effect of imperfect maintenance is random. When the recovery degree of the degradation level is uncertain, the Beta distribution can also be used to describe the random recovery degree of the degradation level.…”

Section: Introductionmentioning

confidence: 99%

Research on imperfect condition-based maintenance strategy based on accelerated degradation process

Chen,

Ren,

2023

Measurement and Control

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To address the situation that the degraded system cannot be repaired as new and the degradation is accelerated after repair in engineering practice, an imperfect condition-based maintenance model is proposed based on the Gamma process by introducing the maintenance improvement factor and the accelerated degradation factor. The maintenance improvement factor describes the recovery degree of the degradation amount after imperfect maintenance, then gives a quantitative representation method of the system maintenance improvement effect and the determination method of the maximum number of imperfect maintenance. The accelerated degradation factor is combined with the geometric process to describe the accelerated degradation process of the system after imperfect maintenance. The Monte Carlo method is used to determine the optimal number of imperfect preventive maintenance decisions. Through the demonstration of calculation examples, the influence of accelerated degradation factor and maintenance improvement factor on the long-term operation maintenance rate and the optimal number of imperfect maintenance is analyzed. The results show that the model can more comprehensively describe the degradation and maintenance process of degraded systems, and it can effectively reduce maintenance cost ratio under long-term operation. It provides a certain theoretical support for formulating an economical and reasonable maintenance strategy that is more in line with the actual degradation and maintenance process in engineering practice.

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Section: Introductionmentioning

confidence: 99%

Research on imperfect condition-based maintenance strategy based on accelerated degradation process

Chen,

Ren,

2023

Measurement and Control

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Modelling and inference for a degradation process with partial maintenance effects

Leroy,

Bérenguer,

Doyen

et al. 2024

Quality & Reliability Eng

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This paper proposes a new way of modelling imperfect maintenance in degradation models, by assuming that maintenance affects only a part of the degradation process. More precisely, the global degradation process is the sum of two dependent Wiener processes with drift. Maintenance has an effect of the ‐type on only one of these processes: it reduces the degradation level of a quantity which is proportional to the amount of degradation of this process accumulated since previous maintenance. Two particular cases of the model are considered: perturbed and partial replacement models. The usual model is also a specific case of this new model. The system is regularly inspected in order to measure the global degradation level. Two observation schemes are considered. In the complete scheme, the degradation levels are measured both between maintenance actions and at maintenance times (just before and just after). In the general scheme, the degradation levels are measured only between maintenance actions. The maximum likelihood estimation of the model parameters is studied for both observation schemes in both particular models. The quality of the estimators is assessed through a simulation study.

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Optimizing aging assets replacement in power systems

Shaghaghi,

Taghitahooneh,

Dashti

2023

Int J Syst Assur Eng Manag

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Replacement and imperfect repair of deteriorating system: Study of a CBM policy and impact of repair efficiency

Cited by 12 publications

References 31 publications

Research on imperfect condition-based maintenance strategy based on accelerated degradation process

Research on imperfect condition-based maintenance strategy based on accelerated degradation process

Modelling and inference for a degradation process with partial maintenance effects

Optimizing aging assets replacement in power systems

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