Work performance dependent screening process under preservation technology in an imperfect production system

Abstract

This study presents an EPQ inventory model which provides some imperfect quality products. Initially, due to the existence of all fresh sources, the system remains in good condition, i.e., in-control state. But, after a certain time of production, this system must produce some defective items with the perfect ones, i.e., the system goes into an out-of-control state. Here, the transition time from one state to another state has been considered as a random variable. Besides that, a generalized screening process has been proposed which is based on the work performance of a worker that also depends on time, this is the key contribution of this study. Also, we have considered a preservation investment cost in the manufacturing system to control the defective rate. A generalized stochastic demand function has been proposed. Finally, numerical implications, managerial implications, and conclusions are made for the justification of my proposed model.

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