Title: An economic production lot-size (EPLS) model with rework and flexibility under allowable shortages
Authors: Narayan Singh; Bindu Vaish; S.R. Singh
Addresses: Department of Mathematics, D.N. (P.G.) College, C.C.S. University, Meerut, U.P. – 250001, India. ' Department of Mathematics, D.N. (P.G.) College, C.C.S. University, Meerut, U.P. – 250001, India. ' Department of Mathematics, D.N. (P.G.) College, C.C.S. University, Meerut, U.P. – 250001, India
Abstract: This paper develops a model to determine the optimal reliability and production rate that achieves the biggest total integrated profit for an imperfect production process under allowable shortage. This paper extends the paper of Sana (2010). Here, we consider two type of production process in a cycle time. One is |in-control| state at the starting of the production which provides conforming quality items and second one is |out-control| state after certain time due to higher production rate and production run time. In this study, we also consider that selling price of the units depends upon the unit production cost and screening cost of the items. The total cost function is illustrated by numerical examples and also its sensitivity analysis is carried out.
Keywords: volume flexibility; imperfect production processes; in-control state; out-of-control state; economic production lot size; EPLS; rework; flexibility; allowable shortages; optimisation; reliability; production rate; total cost function.
International Journal of Procurement Management, 2012 Vol.5 No.1, pp.104 - 122
Published online: 10 Dec 2011 *Full-text access for editors Access for subscribers Purchase this article Comment on this article