Skip to main content
Kent Academic Repository

Decline and repair, and covariate effects

Wu, Shaomin, Scarf, Philip (2015) Decline and repair, and covariate effects. European Journal of Operational Research, 244 (1). pp. 219-226. ISSN 0377-2217. (doi:10.1016/j.ejor.2015.01.041) (KAR id:46766)

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 quantify 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.

Item Type: Article
DOI/Identification number: 10.1016/j.ejor.2015.01.041
Uncontrolled keywords: repair, proportional intensity model, virtual age, maintenance.
Subjects: H Social Sciences > HA Statistics > HA33 Management Science
Divisions: Divisions > Kent Business School - Division > Department of Analytics, Operations and Systems
Depositing User: Shaomin Wu
Date Deposited: 21 Jan 2015 11:46 UTC
Last Modified: 09 Dec 2022 00:26 UTC
Resource URI: https://kar.kent.ac.uk/id/eprint/46766 (The current URI for this page, for reference purposes)

University of Kent Author Information

  • Depositors only (login required):

Total unique views for this document in KAR since July 2020. For more details click on the image.