Economic production quantity model for items with continuous quality characteristic, rework and reject

Jia-Chi Tsou, Seyed Hejazi and Morteza Barzoki

International Journal of Systems Science, 2012, vol. 43, issue 12, 2261-2267

Abstract: The economic production quantity (EPQ) model is a well-known and commonly used inventory control technique. However, the model is built on an unrealistic assumption that all the produced items need to be of perfect quality. Having relaxed this assumption, some researchers have studied the effects of the imperfect products on the inventory control techniques. This article, thus, attempts to develop an EPQ model with continuous quality characteristic and rework. To this end, this study assumes that a produced item follows a general distribution pattern, with its quality being perfect, imperfect or defective. The analysis of the model developed indicates that there is an optimal lot size, which generates minimum total cost. Moreover, the results show that the optimal lot size of the model equals that of the classical EPQ model in case imperfect quality percentage is zero or even close to zero.

Date: 2012
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Citations: View citations in EconPapers (3)

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DOI: 10.1080/00207721.2011.569769

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