MODELING MULTIVARIATE DEGRADATION PROCESSES WITH TIME-VARIANT COVARIATES AND IMPERFECT MAINTENANCE EFFECTS

Research output: Chapters, Conference Papers, Creative and Literary Works (RGC: 12, 32, 41, 45)32_Refereed conference paper (with ISBN/ISSN)peer-review

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Author(s)

Detail(s)

Original languageEnglish
Title of host publicationProceedings of the 31st European Safety and Reliability Conference, ESREL 2021
EditorsBruno Castanier, Marko Cepin, David Bigaud, Christophe Berenguer
Place of PublicationSingapore
PublisherResearch Publishing
Pages1263
ISBN (Print)9789811820168
Publication statusPublished - Sep 2021

Publication series

NameProceedings of the European Safety and Reliability Conference, ESREL

Conference

Title31st European Safety and Reliability Conference (ESREL 2021)
LocationJean-Monnier Congress Centre (in-person & Virtual)
PlaceFrance
CityAngers
Period19 - 23 September 2021

Abstract

In this article, we develop two degradation models to characterize multivariate degrading systems subject to time-variant covariates and imperfect maintenance activities. We first construct a multivariate Wiener process to serve as a baseline model, on top of which two types of models are developed to meaningfully describe the time-variant covariates and imperfect maintenance effects. The underlying difference between the two models lies in the way of formulating the impacts of covariates and maintenance: The first model reflects these influences in the degradation rates/paths directly, whereas the second one describes the impacts by modifying the time scales governing the degradation processes. In each model, we present two particular imperfect maintenance models that differ in the extent of reduction in degradation level or virtual age. The two degradation models are then compared in certain special cases. The proposed multivariate degradation models pertain to complex industrial systems whose health deterioration can be characterized by multiple performance characteristics and can be altered or affected by maintenance activities and operating/environmental conditions.

Research Area(s)

  • Degradation path adjustment, imperfect maintenance, multivariate Wiener process, piece-wise constant covariates, time scale adjustment

Citation Format(s)

MODELING MULTIVARIATE DEGRADATION PROCESSES WITH TIME-VARIANT COVARIATES AND IMPERFECT MAINTENANCE EFFECTS. / WANG, Xiaolin; GAUDOIN, Olivier; DOYEN, Laurent et al.

Proceedings of the 31st European Safety and Reliability Conference, ESREL 2021. ed. / Bruno Castanier; Marko Cepin; David Bigaud; Christophe Berenguer. Singapore : Research Publishing, 2021. p. 1263 (Proceedings of the European Safety and Reliability Conference, ESREL).

Research output: Chapters, Conference Papers, Creative and Literary Works (RGC: 12, 32, 41, 45)32_Refereed conference paper (with ISBN/ISSN)peer-review