Economic Order Quantity Model for Imperfect Items Under Repair Option and Inspection Errors

Authors

Abstract

In this study, an economic order quantity (EOQ) model is extended to the case of imperfect items in a product lot. A 100% inspection process of the lot is conducted. An inspection error can occur despite a 100% inspection. From which, the misclassification is occurred that consists of two cases: (i) classifying non-defective items as defective, (ii) classifying defective items as non-defective. Moreover, for classifying defective items as defective, these defective items are sent to repair and will be returned to inventory when items in inventory are empty. This study is to determine the optimal policy with optimal order size and maximum expected total profit per unit of time. A numerical example and sensitivity analysis are exemplified. Keywords :  EOQ model, imperfect item, inspection error, misclassification, repair

Author Biographies

Panuwat Pimsap, Khon Kaen University

Department of Statistics

Wuttichai Srisodaphol, Khon Kaen University

Department of Statistics

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Published

2018-01-08