Optimization of CNC Turning Parameters on Aluminum 7015 Hybrid Metal Matrix Composite Using Taguchi Robust Design

-The Aluminum Hybrid Metal Matrix Composites (Al-HMMC) are finding numerous applications in many areas like Automobile, Piston and Cylinder and Aerospace, etc. Adding a third element into the metal matrix composite makes it hybrid. The Reinforcement of SiC and Graphite used in this Al-HMMC improves its strength. The present investigation is to find the optimum machining parameter of CNC turning centre on Al-HMMC. The main objective is to find the optimum cutting parameters to achieve low value of surface roughness and high Material Removal Rate (MRR). The cutting parameters considered in this experimental investigation are cutting speed, feed rate and depth of cut. Taguchi L27 orthogonal array was chosen to conduct the experiments. Signal to Noise ratio (S/N) and Analysis of Variance (ANOVA) were used to analyze the effect of cutting parameters on surface roughness and MRR. The contribution by each cutting parameter to surface roughness and MRR was also determined. Keyword: Hybrid Metal Matrix Composite, Taguchi, Surface Roughness, MRR and ANOVA.