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JSIR Vol.68(06) [June 2009] >


Title: Incorporating multi-delivery policy and quality assurance into economic productionlot size problem
Authors: Chiu, Yuan-Shyi Peter
Chiu, Singa Wang
Li, Chun-Yi
Ting, Chia-Kuan
Keywords: EPQ model
Lot sizing
Multiple deliveries
Production
Rework
Scrap
Issue Date: Jun-2009
Publisher: CSIR
Abstract: This paper incorporates a multi-delivery policy and quality assurance into an imperfect economic production quantity(EPQ) model with scrap and rework. A portion of nonconforming items produced is considered to be scrap, while other isassumed to be repairable and is reworked in each cycle when regular production ends. Finished items can only be delivered tocustomers if whole lot is quality assured after rework. Fixed quantity multiple installments of finished batch are delivered byrequest to customers at a fixed interval of time. Expected integrated cost function per unit time is derived. A closed-form optimalbatch size solution to the problem is obtained. Two special cases are examined and a numerical example given to demonstratemodel’s practical usage.
Page(s): 505-512
ISSN: 0022-4456
Source:JSIR Vol.68(06) [June 2009]

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