Using Decision Analysis Concept to Implement Variant Process Planning System

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Shokrzad, Reza | 2013

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Type of Document: M.Sc. Thesis
Language: Farsi
Document No: 44604 (01)
University: Sharif University of Technology
Department: Industrial Engineering
Advisor(s): Kianfar, Farhad
Abstract:
In Computer-Aided Process Planning, there are two ways of manufacturing called Variant Manufacturing and Generative Manufacturing. Variant Manufacturing is based on a data base from a part family for a project. The part family is made in a series of root sheets regarding the final form of the intended part. The data base is updated after the manufacturing of each part. In order to make the system intelligent, one can use the OPITZ coding system that specifies the geometrical form, geometrical details and part manufacturing operations in a 13-digit number. The aim of this research is to choose the best machining parameters according to time and cost, that, based on the basic principles of Decision Analysis including the Decision Tree, one can get the optimum choice for the main machining parameters by defining the cost function as the expected value of each branch of the Decision Tree. A cost function is attributed to each root sheet and a cost is attributed to each branch of the Decision Tree. The elements are chosen by surveying the Tree and specifying the total cost of the nearest Family
Keywords:
Decision Making Tree ; Decision Making Theory ; Computer Aided Process Planning ; OPITZ Coding

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