Parametric analysis on drilling of aluminium alloy hybrid composites reinforced with SIC/WC

Abstract Aluminium alloy (Al7075) based hybrid metal matrix composites reinforced with Silicon carbide (SiC) and Tungsten (WC), at 5 wt% each are considered for this investigation, which developed by stir casting methodology. Material characteristic analysis both micro macro (Tensile strength hardness) level were performed. This investigation is further progressed drilling of the using titanium aluminium nitride coated drill (5mm diameter) varied point angle, feed rate speed. The responses such as thrust force, surface roughness roundness error investigated adopting Response Surface Methodology (RSM). Multiple linear regression (MLR) along Artificial Neural Networks (ANN) model predicting outputs. Scanning Electron Microscope (SEM) image reveals uniform distribution ceramic particles in ascertains enhanced mechanical properties. parameters angle found to have significant influence during process. higher due wider cutting edges bit. For unconstrained multi-objective optimization, optimal condition obtained 128°- 0.05 mm rev ?1 1000 rpm constrained optimization (roundness ?0.05 mm), conditions 118°