Maintenance cost assessment for heterogeneous multi-component systems incorporating perfect inspections and waiting time to maintenance
PROCEEDINGS OF THE INSTITUTION OF MECHANICAL ENGINEERS PART O-JOURNAL OF RISK AND RELIABILITY(2024)
摘要
Most existing research about complex systems maintenance assumes they consist
of the same type of components. However, systems can be assembled with
heterogeneous components (for example degrading and non-degrading components)
that require different maintenance actions. Since industrial systems become
more and more complex, more research about the maintenance of systems with
heterogeneous components is needed. For this reason, in this paper, a system
consisting of two groups of components: degrading and non-degrading components
is analyzed. The main novelty of this paper is the evaluation of a maintenance
policy at system-level coordinating condition-based maintenance for the
degrading components, delay time to the maintenance and an inspection strategy
for this heterogeneous system. To that end, an analytic cost model is built
using the semi-regenerative processes theory. Furthermore, a safety constraint
related to the reliability of the degrading components is imposed. To find the
optimal maintenance strategy, meta-heuristic algorithms are used.
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关键词
Condition-based maintenance,opportunistic maintenance,gamma process,semi-regenerative process,lead time,safety constraint
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