Decline and repair and covariate effects

Wu, Shaomin and Scarf, PA ORCID: https://orcid.org/0000-0001-5623-906X 2015, 'Decline and repair and covariate effects' , European Journal of Operational Research, 244 (1) , pp. 219-226.

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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.

Item Type:	Article
Themes:	Energy
Schools:	Schools > Salford Business School > Salford Business School Research Centre
Journal or Publication Title:	European Journal of Operational Research
Publisher:	Elsevier
Refereed:	Yes
ISSN:	0377-2217
Related URLs:	Publication
Funders:	Non funded research
Depositing User:	Dr Philip Scarf
Date Deposited:	04 Feb 2015 18:23
Last Modified:	05 Oct 2020 14:15
URI:	http://usir.salford.ac.uk/id/eprint/33494

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