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A deterministic production inventory model with defective items, imperfect rework process and shortages backordered

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  • Harun Öztürk

Abstract

The basic assumption of the conventional inventory models is that all items produced are of perfect quality. In practice, some defective items are produced due to process deterioration or other factors. This paper develops a mathematical model for an imperfect production inventory system. It is assumed that the defective items produced in the regular production process consist of scrap, imperfect quality and reworkable items. The rework process is accomplished immediately when the regular production process ends, and the rework process produces scrap, imperfect quality and as-good-as perfect items. A numerical example is provided to illustrate the developed model, and a sensitivity analysis is carried out. It was found that producing scrap and imperfect quality items through the reworking is crucial, since this assumption effects optimal policy. Managerial insights are also presented based on the numerical examples.

Suggested Citation

  • Harun Öztürk, 2020. "A deterministic production inventory model with defective items, imperfect rework process and shortages backordered," International Journal of Operational Research, Inderscience Enterprises Ltd, vol. 39(2), pages 237-261.
    • Handle: RePEc:ids:ijores:v:39:y:2020:i:2:p:237-261
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    Cited by:

    1. S. Ganesan & R. Uthayakumar, 2023. "An EPQ model for a single-machine multiproduct imperfect production system using a hybrid logarithmic barrier method," OPSEARCH, Springer;Operational Research Society of India, vol. 60(3), pages 1121-1152, September.

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