A model for determining optimum process mean in the presence of inspection errors by considering the cycle time

Document Type : Original Manuscript

Authors

1 College of Engineering, Yazd University, Yazd, Iran

2 Industrial engineering department , Yazd university

Abstract

Any production process should be adjusted based on a target value. The problem of process mean determination in a production system with two markets is investigated. An absorbing Markov chain is employed to formulate the flow of items. All items are inspected and if the value of the quality characteristic falls below a lower limit then the item is scrapped and when it falls above an upper limit then the item is reworked. Since some items are reworked thus the cycle time of production is computed in the presence of the inspection errors. Numerical studies are performed to analyze the results

Highlights

  • Considering two markets for the sale of items.
  • Considering the process cycle time in objective function. Due to the use of reworking loops in the production process, one item may be processed several times that leads to increase the cycle time of production.
  • Considering inspection errors in the model along with analyzing their effects on the sales and the total profit of manufacturer.
  • Considering loss functions in the model. The costs of quality are usually analyzed by reworking cost or scrapping cost. However, Taguchi considered cost to customers. Since after sale of the

Keywords


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