An extended economic manufacturing quantity model for a failure prone machine with general lifetime distribution

An extended economic manufacturing quantity model for a failure prone machine with general lifetime distribution

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Article ID: iaor1998637
Country: Netherlands
Volume: 49
Issue: 3
Start Page Number: 215
End Page Number: 223
Publication Date: May 1997
Journal: International Journal of Production Economics
Authors: ,
Keywords: maintenance, repair & replacement
Abstract:

This paper presents an economic manufacturing quantity (EMQ) model which determines an optimal lot size in a failure prone machine. It is assumed that time between failures of a machine is generally distributed, and a machine is repaired instantaneously when it fails. Depending on various types of failure rate function of a machine, it is discussed how to determine an EMQ and prove its uniqueness. Variations of an EMQ depending on repair cost are also examined. Through numerical experiments, extensive investigations are carried out on the effects of repair cost and setup cost to an EMQ as well as average cost, and some interesting behaviors are observed.

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