Prediction of Optimal Drilling Parameters of Aa6063/Sic/B4c/Fa Hybrid Composites using Taguchi and Topsis Techniques

This research explores the optimal machining parameters for drilling AA6063/SiC/B4C/FA hybrid composites using a novel multi-response optimization approach that TOPSIS with a Taguchi-based technique. AA6063, an architectural alloy, is characterized by limited strength, surface hardness, and moderated machinability. To enhance these properties, ceramic particles such as SiC, B4C, and FA are incorporated into the base AA6063 using a stir-casting process. This study aims to optimize the drilling conditions to improve the performance and durability of the resulting hybrid composites. A Taguchi L-32 experimental array was employed to assess the effects of drilling parameters, including spindle speed (1000, 1250, 1500 and 1750 rpm), feed rate (0.1, 0.15, 0.2, and 0.25 mm/rev), point angle (60°, 90°, 118°, and 135°), and tool type (HSS and carbide). The study evaluated the surface roughness (Ra), and material removal rate (MRR) of drilled holes using ANOVA and TOPSIS analysis. The results indicate that the ideal drilling parameters are1500 rpm (speed), 0.25 mm/rev (feed), 90° (point angle) with carbide tool for optimal Ra and MRR.