Treffer: An integrated EPQ model based on a control chart for an imperfect production process.

Title:
An integrated EPQ model based on a control chart for an imperfect production process.
Authors:
Pan, Ershun, Jin, Yao, Wang, Shuyi, Cang, Ting
Source:
International Journal of Production Research; Dec2012, Vol. 50 Issue 23, p6999-7011, 13p, 2 Diagrams, 3 Charts, 8 Graphs
Subject Terms:
QUALITY control charts, PRODUCTION quantity, PRODUCTION control, STATISTICAL process control, PRODUCTION management (Manufacturing), MANUFACTURING processes
Database:
Complementary Index

Weitere Informationen

The notion of quality control is introduced into the classic economic production quantity (EPQ) model. Based on previous research, this paper contributes to an integrated EPQ model combining the concepts of statistical process control and maintenance. An imperfect production process involving three different conditions is considered. A control chart is adopted to monitor the whole process with Taguchi's loss function estimating the quality cost of each condition. A corresponding maintenance policy is planned for the machine depending on what condition it runs in. Thus the proposed EPQ model takes quality-related costs and maintenance-related costs into account other than storage costs and ordering costs already considered in the classic model. The objective of this model is to minimise the total expected production cost per production cycle while simultaneously determining the optimal parameters of control chart design, the interval between sampling, the sample size and the maintenance decision policy. The pattern search method is used to solve the problem using the MATLAB toolbox. In addition, a case study, sensitivity analysis and comparison analysis are presented to demonstrate the application of the model. [ABSTRACT FROM PUBLISHER]

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