OPTIMIZATION OF MULTIPLE PERFORMANCE CHARACTERISTICS WITH GREY RELATIONAL ANALYSIS FOR SS 304 6.1 INTRODCUTION The optimization of parameters considering multiple performance
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چکیده
The optimization of parameters considering multiple performance characteristics of the EDM process for SS 304 using the GRA is presented. Performance characteristics including MRR, TWR, and OC are chosen to evaluate the machining effects. Those process parameters that are closely correlated with the selected performance characteristics in this study are the pulse-on time, current, and voltage. Experiments based on the appropriate L 9 OA are conducted first. The normalized experimental results of the performance characteristics are then introduced to calculate the coefficient and grades according to GRA. Optimized process parameters simultaneously leading to higher MRR and lower TWR and OC will then be verified through a confirmation experiment. The details of the procedures are explained in the following sections.
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