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Optimal deteriorating items production inventory models with random machine breakdown and stochastic repair time. (English) Zbl 1221.90024

Summary: This study develops deteriorating items production inventory models with random machine breakdown and stochastic repair time. The model assumes the machine repair time is independent of the machine breakdown rate. The classical optimization technique is used to derive an optimal solution. A numerical example and sensitivity analysis are shown to illustrate the models. The stochastic repair models with uniformly distributed repair time tends to have a larger optimal total cost than the fixed repair time model, however the production up time is less than the fixed repair time model. Production and demand rate are the most sensitive parameters for the optimal production up time, and demand rate is the most sensitive parameter to the optimal total cost for the stochastic model with exponential distribution repair time.

MSC:

90B05 Inventory, storage, reservoirs
90B25 Reliability, availability, maintenance, inspection in operations research
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