Multi-objective optimization of parameters in drilling of natural fibre Composites (Kenaf) using Taguchi and Grey relational analysis

Taguchi and Grey Relational Analysis (GRA) are used in this study to reduce thrust force, torque, surface roughness, and roundness in drilling natural fibre composites. Drilling parameters, such as cutting speed, feed, point angle, and chisel angle, were used in this investigation. Experiments were conducted in accordance with Taguchi's experimental design using an L18 orthogonal array. Mathematical formula ANOVA was performed to determine how much each process parameter contributes to the responses. The results show that point angle, chisel edge width, feed, and speed have the greatest impact on the multi-performance characteristics.