Abstract
Micro-electrical discharge machining (Micro-EDM) is a micro-machining process in which miniaturised and precision parts/components are manufactured with good dimensional accuracy and fine surface finish. The present work investigates the effect of magnetic field-assisted Micro-EDM of Aluminium Matrix Composites with a Tungsten electrode using the Response Surface Methodology (RSM). Experiments are conducted based on RSM based central composite design. The process parameters considered for this study are voltage, capacitance and feed rate. The material removal rate (MRR) is considered as the output process parameter. The response surface-based mathematical model is developed for MRR. The model is statistically significant and all the three machining parameters and interaction effects are also significant on the MRR. Experimental investigation shows that the addition of magnetic field in Micro-EDM increases the MRR. Finally the predicted values and experimental values are validated by confirmation experiments.
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