Decline and repair and covariate effects

Wu, Shaomin; Scarf, PA

Abstract

The failure processes of repairable systems may be impacted by operational and environmental stress factors. To accommodate such factors, reliability can be modelled using a multiplicative intensity function. In the proportional intensity model, the failure intensity is the product of the failure intensity function of the baseline system that quantifies intrinsic factors and a function of covariates that quantifies extrinsic factors. The existing literature has extensively studied the failure processes of repairable systems using general repair concepts such as age-reduction when no
covariate effects are considered. This paper investigates different approaches for modelling the failure and repair process of repairable systems in the presence of
time-dependent covariates. We derive statistical properties of the failure processes
for such systems.

Citation

Wu, S., & Scarf, P. (2015). Decline and repair and covariate effects. European Journal of Operational Research, 244(1), 219-226. https://doi.org/10.1016/j.ejor.2015.01.041

• Journal Article Type: Article
• Acceptance Date: Jan 20, 2015
• Online Publication Date: Jan 29, 2015
• Publication Date: Jul 1, 2015
• Deposit Date: Feb 4, 2015
• Publicly Available Date: Mar 29, 2018
• Journal: European Journal of Operational Research
• Print ISSN: 0377-2217
• Publisher: Elsevier
• Peer Reviewed: Peer Reviewed
• Volume: 244
• Issue: 1
• Pages: 219-226
• DOI: https://doi.org/10.1016/j.ejor.2015.01.041
• Publisher URL: http://dx.doi.org/10.1016/j.ejor.2015.01.041
• Related Public URLs: http://www.journals.elsevier.com/european-journal-of-operational-research/