Economic Production Quantity (EPQ) deteriorating inventory model with machine breakdown and stochastic repair time

In recent years, many researchers focus their studies on developing practical economic production quantity (EPQ) models. This paper develops an EPQ deteriorating item model with machine breakdown and stochastic repair time. A numerical example and sensitivity analysis are given to illustrate the theory. The results show that production rate and demand rate are the most sensitive parameters to the optimal production period, and demand rate is the most sensitive parameter to the optimal total cost.