Optimal Fuzzy Order Inventory Model with a Mixture of Shortages and Imperfect Items

To deal with the uncertainties and randomness of defective percentage and shortages happened in the real-life situations, the order inventory model with a mixture of shortages and imperfect items is presented and investigated in the fuzzy environment. The objective function is established on the total inventory cost. Then, the economic order quantity is decided by optimizing the objective function by using the derivative method to find the minimal inventory cost. Finally, the numerical example is presented and the influence of the defective percentage on the presented model is studied.