Economic Order Quantity Models For Imperfect Items With Repair Under Conditions Of Permissible Delay In Payments (Case Study Ratna Elektronic)

摘要

Inventory is a product stored for future use. In the traditional EOQ model, there is a basic assumption that all products sent by the supplier are all in good condition witho ut disability and in the absence of a policy of deferring payment. But in reality, in the production process not all products are produced in good condition and not all retailers are able to pay for the pro ducts ordered immediately so that the supplier can provide a policy of delay payment. Therefore, this study aims to produce EOQ inventory models for defective products with improvements under the policy of postponement of payments. There are two cases given, first when payments are made over a predetermined time cycle and second when payments are made less than the time cycle specified. The objective function is modeled to maximize expected returns. The optimal ordering cycle length and optimal order quantity are obtained by looking at the available theorems. Numerical simulation is used to illustrate the EOQ m odel applied to Electronic Ratna, Mojokerto. Sensitivity analysis of the optimal solution is shown to determine the effect of parameter change on the decision variable.