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Study on Dispatching with Quality Assurance  

Ko, Hyo-Heon (Department of Industrial Systems and Information Engineering, Korea University)
Kim, Jihyun (Semiconductor Technology Research Center, Korea University)
Baek, Jun-Geol (School of Business, Kwangwoon University)
Kim, Sung-Shick (Department of Industrial Systems and Information Engineering, Korea University)
Publication Information
Journal of Korean Institute of Industrial Engineers / v.34, no.1, 2008 , pp. 108-121 More about this Journal
Abstract
Dispatching rule for parallel machines with multi product is proposed in this paper, In current market,customer's request for higher quality is increasing, In accordance with such demand, manufacturers are focusingon improving the quality of the products. Such shift in production objective is risky. The possibility ofneglecting another important factor in customer satisfaction increases, namely due dates. From the aspect ofimproving quality, frequency of product assignment to limited number of high performance machines willincrease. This will lead to increased waiting time which can incur delays, In the case of due date orientedproduct dispatch, Products are assigned to machines without consideration for quality. Overall deterioration ofproduct quality is inevitable, In addition, Poor products will undergo rework process which can increase delays.The objective of this research is dispatching products to minimize due date delays while improving overallquality. Quality index is introduced to provide means of standardizing product quality. The index is used toassure predetermined quality level while minimizing product delays when dispatching products. Qualitystandardization method and dispatching algorithm is presented. And performance evaluation is performed withcomparison to various dispatching methods.
Keywords
Quality; Dispatching; Scheduling; Rework;
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