JOINT DETERMINATION OF OPTIMUM PROCESS MEAN AND ECONOMIC SPECIFICATION LIMITS FOR RECTIFYING INSPECTION PLAN WITH INSPECTION ERROR

ABSTRACT

In 2006, Chen presented a modified Pulak and Al-Sultan's model with quadratic quality loss function of product within the specification limits for determining the optimum process parameters. However, he did not consider the problem of inspection error. In this paper, the authors propose an integrated model for obtaining the optimum process mean and economic specification limits based on the modified Chen's model with inspection error. Finally, the numerical results and sensitivity analyses of the modified Chen's model with inspection error and those of Chen's model without inspection error are further provided for illustration.

Keywords:

• process mean
• specification limits
• quadratic quality loss function
• rectifying inspection plan
• inspection error