A DECISION SUPPORT SYSTEM FOR TOOL ELECTRODE SELECTION FOR ELECTRO DISCHARGE MACHINING PROCESS USING THE ANALYTIC HIERARCHY PROCESS
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Abstract
The shape and accuracy of any part machined using the electro discharge machining process depends primarily on the shape and accuracy of the tool or the cutting electrode. Hence, the selection of tool electrodes in Electro Discharge Machining Process becomes an important task. Theoretically, any material that is a good conductor of electricity can be used as a tool with varying advantages. It is very difficult to find a single material that possesses all the desirable characteristics, and therefore the selection becomes a difficult task. The present paper proposes a methodology based on the Analytic Hierarchy Process (AHP) for selection of a Tool Electrode for the Electro Discharge Machining Process. Based on the AHP method, an Electrode Selection Index (ESI) is found for all the alternatives that are considered in the present study. This ESI helps to evaluate and rank any given number of alternative materials. The results of the present study suggest that Graphite and Copper are the best materials for fabricating a tool electrode in EDM process.
http://dx.doi.org/10.13033/ijahp.v4i2.131
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Tool Electrodes, Analytic Hierarchy Process, Electrode Selection Index
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