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A suitable inspection policy definition for system with two modes of degradation

Bassem Saassouh 1 Laurence Dieulle 1 Antoine Grall 2, 1 
2 STMR - Sciences et Technologies pour la Maitrise des Risques
UTT - Université de Technologie de Troyes, CNRS - Centre National de la Recherche Scientifique : UMR6279
Abstract : In this paper, a condition-based maintenance policy is proposed for a gradually deteriorating system with several modes of deterioration. The gamma process is used to describe the system degradation. The system deteriorates from a good as new state to the break down state (when the aging variable reaches a failure level). The level of deterioration can only be known by inspections and the time of change of degradation mode is not detected on line. The aim of the policy is to propose a suitable inspection schedule in every mode of deterioration as well as a related maintenance decision rule. A preventive maintenance is planned when the predicted deterioration level at the next inspection overpasses the failure level with a probability greater than a limit value.
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Submitted on : Friday, May 15, 2020 - 5:30:06 PM
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Bassem Saassouh, Laurence Dieulle, Antoine Grall. A suitable inspection policy definition for system with two modes of degradation. 6th IFAC Symposium on Fault Detection, Supervision and Safety of Technical Processes, Aug 2006, Beijing, China. pp.789-794, ⟨10.3182/20060829-4-CN-2909.00131⟩. ⟨hal-02593607⟩



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