An Economic Approach to the Management of High-Quality Processes


Correspondence to: Şebnem Yılmaz, Department of Industrial Engineering, Faculty of Engineering, Dokuz Eylul University, 35160 Buca İzmir, Turkey.



Modern manufacturing developments have forced researchers to investigate alternative quality control techniques for high-quality processes. The cumulative count of conforming (CCC) control chart is a powerful alternative approach for monitoring high-quality processes for which traditional control charts are inadequate. This study develops a mathematical model for the economic design of the CCC control chart and presents an application of the proposed model. On the basis of the results of the application, the economic and classical CCC control chart designs of the CCC control chart are compared. The optimal design parameters for different defective fractions are tabulated, and a sensitivity analysis of the model is presented for the CCC control chart user to determine the optimal economic design parameters and minimum hourly costs for one production run according to different defective fractions, cost, time, and process parameters. Copyright © 2012 John Wiley & Sons, Ltd.