A load sharing system reliability model with managed component degradation

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Ye, Zhisheng and Revie, Matthew and Walls, Lesley (2014) A load sharing system reliability model with managed component degradation. IEEE Transactions on Reliability, 63 (3). pp. 721-730. ISSN 0018-9529 (https://doi.org/10.1109/TR.2014.2315965)

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Abstract

Motivated by an industrial problem affecting a water utility, we develop a model for a load sharing system where an operator dispatches work load to components in a manner that manages their degradation. We assume degradation is the dominant failure type, and that the system will not be subject to sudden failure due to a shock. By deriving the time to degradation failure of the system, estimates of system probability of failure are generated, and optimal designs can be obtained to minimize the long run average cost of a future system. The model can be used to support asset maintenance and design decisions. Our model is developed under a common set of core assumptions. That is, the operator allocates work to balance the level of the degradation condition of all components to achieve system performance. A system is assumed to be replaced when the cumulative work load reaches some random threshold. We adopt cumulative work load as the measure of total usage because it represents the primary cause of component degradation. We model the cumulative work load of the system as a monotone increasing and stationary stochastic process. The cumulative work load to degradation failure of a component is assumed to be inverse Gaussian distributed. An example, informed by an industry problem, is presented to illustrate the application of the model under different operating scenarios.

ORCID iDs

Ye, Zhisheng, Revie, Matthew ORCID logoORCID: https://orcid.org/0000-0002-0130-8109 and Walls, Lesley ORCID logoORCID: https://orcid.org/0000-0001-7016-9141;
  • Item type:Article
    ID code:55794
    Dates:
    Date
    Event
    1 September 2014
    Published
    22 April 2014
    Published Online
    17 December 2013
    Accepted
    Notes:(c) 2014 IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other users, including reprinting/ republishing this material for advertising or promotional purposes, creating new collective works for resale or redistribution to servers or lists, or reuse of any copyrighted components of this work in other works.
    Subjects:Social Sciences > Industries. Land use. Labor > Risk Management
    Department:Strathclyde Business School > Management Science
    Depositing user: Pure Administrator
    Date deposited:08 Mar 2016 10:57
    Last modified:15 Dec 2024 23:28
    URI:https://strathprints.strath.ac.uk/id/eprint/55794
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