A summary of discrete replacement policies. (English) Zbl 0541.90046
Summary: This paper summarizes replacement models with discrete variables: (i) Three standard age, block and periodic replacement policies are rewritten as discrete time models. (ii) Four models are considered where the unit is replaced after a specified number of failures, shocks, repairs and preventive maintenances have occurred. Optimal policies to minimize the expected cost rates are also discussed. (iii) Two discrete problems of a parallel redundant system which determine the total number of failed units and the number of all units are considered. Finally, extended models with two variables are introduced.
MSC:
| 90B25 | Reliability, availability, maintenance, inspection in operations research |
| 90C90 | Applications of mathematical programming |
| 90-02 | Research exposition (monographs, survey articles) pertaining to operations research and mathematical programming |
Keywords:
reliability; optimization; stochastic processes; replacement models with discrete variables; periodic replacement; preventive maintenances; expected costReferences:
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