An optimization approach for brass casting blending problem under aletory and epistemic uncertainties

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• 作者：Ü ; mit Sami Sakallı ; ^a ; ^{ssakalli@gazi.edu.tr"" rel=""nofollow} ; Ö ; mer Faruk Baykoç ; ^b ; ¹ ; ^{baykoc@gazi.edu.tr"" rel=""nofollow}
• 关键词：Blending problem ; Uncertainty ; Probability/possibility transformation ; Brass casting ; Optimization
• 刊名：International Journal of Production Economics
• 出版年：2011
• 出版时间：October 2011
• 年：2011
• 卷：133
• 期：2
• 页码：708-718
• 全文大小：881 K

文摘

A critical process in brass casting is the determination of the materials and their quantities to be added into the blend. The reason of being critical is the uncertainty about metal percentages in scrap raw materials. In this paper, the aleatory and epistemic uncertainties, which are modeled by using probability and possibility theory, respectively, have been handled simultaneously in a blending optimization problem for brass casting and a solution approach that transforms the possibilistic uncertainties into probabilistic ones is proposed. A numerical example is performed by the data supplied from MKE brass factory in Turkey. The results of the example have showed that the proposed approach can be effectively used for solving blending problem including aleatory and epistemic uncertainties in brass casting and other scrap based production process.