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On optimal life extension for degrading systems

Title
On optimal life extension for degrading systems
Authors
Cha J.H.Finkelstein M.
Ewha Authors
차지환
SCOPUS Author ID
차지환scopus
Issue Date
2020
Journal Title
Proceedings of the Institution of Mechanical Engineers, Part O: Journal of Risk and Reliability
ISSN
1748-006XJCR Link
Citation
Proceedings of the Institution of Mechanical Engineers, Part O: Journal of Risk and Reliability vol. 234, no. 3, pp. 487 - 495
Keywords
expected lifetimeimperfect repairlife extensionperfect repairPreventive maintenance
Publisher
SAGE Publications Ltd
Indexed
SCIE; SCOPUS scopus
Document Type
Article
Abstract
We consider life extension models for critical, complex systems with relatively long lifecycles. In contrast to traditional optimal preventive maintenance that usually minimizes the corresponding long run cost rate, a finite number of preventive maintenances are performed to increase the expected lifetime of these systems in an optimal way. The cases of periodic and aperiodic preventive maintenance actions are discussed. The proposed novel approach to life extension allows for simple sensitivity analysis with respect to parameters of the model. The obtained optimal solutions can result in a noticeable increase in the useful life of complex systems. Our findings are illustrated by numerical examples. © IMechE 2020.
DOI
10.1177/1748006X19897468
Appears in Collections:
자연과학대학 > 통계학전공 > Journal papers
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