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International Society of Science and Applied Technologies |
| Extended Maintenance Policies with Working and Stopping Periods | ||||
| Author | Satoshi Mizutani
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| Co-Author(s) | Toshio Nakagawa
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| Abstract | We treat optimal maintenance policy with the operation and stopping period. We suppose that the system consists of one unit. The operating period is given as random variable. When the unit has failed in the operating period, the failed unit is repaired in the stopping period. We suppose that the unit might has only one failure, and there is no fatal failure which is should be repaired immediately. The system operates again when the unit has no failure or its failure is repaired. When the repairment has not done by the planned cycle time, loss cost per unit of time is incurred from the time to the repair completion. We consider following two models for the system: (1) Maximizing benefits model: a constant income is generated when an operation has completed. (2) Low bound operating period model: This is a special case of (1), the distribution of operating period has location parameter. We consider the benefit as a difference of the income and the loss cost and derive the expected benefit per unit of time for these models. Further, we discuss analytically the optimal planned cycle time which maximizes the expected benefit per unit of time.
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| Keywords | Replacement policy, Operating period, Expected benefit, Standard operating time | |||
| Article #: RQD2025-67 | ||||
Proceedings of 30th ISSAT International Conference on Reliability & Quality in Design |