Chung-Ho Chen  1 and Michael B. C. Khoo2

1Department of Management and Information Technology, Southern Taiwan University, Yungkang, Taiwan 710, R.O.C.
2School of Mathematical Sciences, Universiti Sains Malaysia, 11800 USM, Penang, Malaysia


 

Received: July 29, 2009
Accepted: April 22, 2010
Publication Date: December 1, 2010

Download Citation: ||https://doi.org/10.6180/jase.2010.13.4.03  


ABSTRACT


The determination of the optimum process mean has been a major topic in statistical process control. It directly affects the process defective rate, production cost, scrap cost, and rework cost. In 2000, Lee et al. presented a filling problem for determining the optimum process mean and screening limits. They considered three grades of product, assumed a normal quality characteristic, and adopted the piecewise linear profit function for measuring the profit per item. However, they have not included the scrap cost and the perfect rework process in their model. In this paper, we further propose a modified Lee et al.’s model with rework process for determining the optimum process mean. Both perfect rework and imperfect rework processes for the product are considered in the model.


Keywords: Process Mean, Process Variance, Rework Process


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