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- W1569013281 abstract "Dry Electric Discharge Machining (EDM) is an environment-friendly modification of the conventional EDM process, which is obtained by replacing the liquid dielectric by a gaseous medium. In this study, multi-objective optimization of dry EDM process has been done using the non dominated sorting genetic algorithm (NSGA II), with material removal rate (MRR) and surface roughness (Ra) as the objective functions. Experiments were conducted with air as dielectric to develop polynomial models of MRR and Ra in terms of the six input parameters: gap voltage, discharge current, pulse-on time, duty factor, air pressure and spindle speed. A Pareto-optimal front was then obtained using NSGA II. Analysis of the front was done to identify separate regions for finish and rough machining. Designed experiments were then conducted in these focused regions to verify the optimization results and to identify the region-specific characteristics of the process. Finishing conditions were obtained at low current, high pulse-on time and low duty factor, where as rough conditions were obtained at high current, low pulse-on time and high duty factor. Focused experiments revealed an additional process constraint based on the flushing efficiency." @default.
- W1569013281 created "2016-06-24" @default.
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- W1569013281 date "2009-08-04" @default.
- W1569013281 modified "2023-09-27" @default.
- W1569013281 title "Multi-objective optimization of the dry electric discharge machining process" @default.
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