Optimal lot sizing, process quality improvement and setup cost reduction
Operations Research
Computers and Operations Research
Theory and Practice of Uncertain Programming
Theory and Practice of Uncertain Programming
Expected value operator of random fuzzy variable and random fuzzy expected value models
International Journal of Uncertainty, Fuzziness and Knowledge-Based Systems
A survey of credibility theory
Fuzzy Optimization and Decision Making
Expected value of fuzzy variable and fuzzy expected value models
IEEE Transactions on Fuzzy Systems
Computers and Industrial Engineering
Computers and Industrial Engineering
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This paper investigates the optimal production run length in deteriorating production processes, where the elapsed time until the production process shifts is characterized as a fuzzy variable, also the setup cost and the holding cost are characterized as fuzzy variables, respectively. A mathematical formula representing the expected average cost per unit time is derived, and some properties are obtained to establish an efficient solution procedure. Since there is no closed-form expression for the optimal production run length, an approximate solving approach is presented. Finally, two numerical examples are given to illustrate the procedure of searching the optimal solutions.