 Performance and cost analysis of repairable systems under imperfect repairMohammed A. Hajeeh International Journal of Operational Research, 2015, vol. 23, issue 1, 1-14 Abstract: Operating systems do not consistently perform their intended function or mission due to improper maintenance and degradation, and thus eventually fail. Upon failure, they are either repaired or replaced; critical and non-expensive systems are usually replaced, whereas expensive and non-critical systems are repaired. Repair can be perfect, where the failed system becomes as good as new, or imperfect. In imperfect repair, a failed system is repaired several times before complete replacement. In this paper, the behaviour of complex repairable systems undergoing imperfect repair is examined. In this regard, an optimisation model is developed with the objective of minimising system's cost at a desired level of availability. Analytical expressions for availability and the optimal cost are derived for simple and non-complex systems; however, simulation is used for assessing complex systems. The analysis revealed that optimal solutions are highly dependent on the structure of the configuration and the desired level of performance. Keywords: optimisation; availability; simulation; standby components; repair channels; probability; replacement; performance evaluation; cost analysis; repairable systems; imperfect repair; complex systems. (search for similar items in EconPapers) Downloads: (external link) Related works: Export reference: BibTeX RIS (EndNote, ProCite, RefMan) HTML/Text Persistent link: https://EconPapers.repec.org/RePEc:ids:ijores:v:23:y:2015:i:1:p:1-14 Access Statistics for this article More articles in International Journal of Operational Research from Inderscience Enterprises Ltd |
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