Estimation of physical, mechanical and machinability properties of Al-MMCs reinforced with coconut shell ash particulates

Abstract

The present work deals, the enhancement of mechanical and physical properties along with machinability characteristics of aluminium composites reinforced with Coconut Shell Ash (CSA). The composites have been prepared with 0-20% of CSA volume with varying 5% using stir casting method. Density of CSA composites decreased and hardness increased with increasing of CSA volume. The yield strengths are found to be 90, 101, 127, 142 and 148 N/mm2 for pure Al, 4%, 10%, 16% and 20% reinforced MMCs respectively. Tensile strength increases and % of elongation decreases with increase in CSA volume. The machinability characteristics of Al and Al-16%CSA composite experiments are designed by Taguchi orthogonal array [L9] to determine the influence process parameters. Speed, feed rate and depth of cut are process parameters with response is surface roughness for aluminium alloy and composite with 16% of CSA. Analysis of variance (ANOVA) is revels the best optimal condition and influence of parameters on surface roughness.