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JSIR Vol.66(12) [December 2007] >


Title: Production run time problem with machine breakdowns under AR control policy and rework
Authors: Chiu, Singa Wang
Keywords: Abort/resume policies
Defective items
Machine breakdowns
Manufacturing
Production run time
Rework
Issue Date: Dec-2007
Publisher: CSIR
Abstract: This paper examines the production run time problem with random machine breakdowns under abort/ resume (AR) policy and reworking of defective items produced. Under AR policy, production of interrupted lot will be immediately resumed when breakdown is fixed and machine is restored. Mathematical modeling and derivation of the production- inventory cost functions for both systems with/without breakdowns are presented. These cost functions are integrated and long-run average cost per unit time is obtained. Theorems on convexity and on bounds of run time are proposed and proved. A recursive searching algorithm is developed for locating optimal run time within the bounds. Numerical example with sensitivity analysis is provided to assist in optimal operational control of such an unreliable system.
Page(s): 979-988
ISSN: 0022-4456
Source:JSIR Vol.66(12) [December 2007]

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