Using Entropy Weight and Over All Evaluation Criteria Optimize the Parameters in EDM of Al–20 Wt. % SICP MMC

Abstract

The paper has been described one of the recent effective optimization technique i.e. Over all Evaluation Criteria (OEC) to controlling the process parameter during Electrical discharge machining (EDM) of Al – 20 wt.% SiCP metal matrix composite (MMC). The MMC is one of the advance material in compare to the conventional material. To exploit the industrial application of this material with EDM it needs to optimize the process parameter for reliable and economical production of this process. For that the experiment is carried out by Central composite design (CCD) method by considering the input process parameters like peak current, pulse on time and flushing pressure and the output are material removal rate, tool wear rate, radial over cut and surface roughness (Ra). In order to optimize the process parameter a combine effect of Entropy weight measurement method and Over all Evaluation Criteria (OEC) is used to get a single numerical index. Finally, the present work.is is carried out by confirmation test to analyse the desirable approach of the selected model.