Optimization of machining parameters in drilling hybrid aluminium metal matrix composites
(1. Department of Mechanical Engineering, Sri Chandrasekharendra Saraswathi Viswa Maha Vidyalaya University,
Kanchipuram 631561, India;
2. Department of Mechanical Engineering, Sri Sairam Institute of Technology, Chennai 600044, India;
3. Department of Mechanical Engineering, Sun College of Engineering and Technology,
Sun Nagar, Erachakulam Post, Kanyakumari 629902, India)
Kanchipuram 631561, India;
2. Department of Mechanical Engineering, Sri Sairam Institute of Technology, Chennai 600044, India;
3. Department of Mechanical Engineering, Sun College of Engineering and Technology,
Sun Nagar, Erachakulam Post, Kanyakumari 629902, India)
Abstract: Taguchi method with grey relational analysis was used to optimize the machining parameters with multiple performance characteristics in drilling hybrid metal matrix Al356/SiC-mica composites. Experiments were conducted on a computer numerical control vertical machining centre and L18 orthogonal array was chosen for the experiments. The drilling parameters namely spindle speed, feed rate, drill type and mass fraction of mica were optimized based on the multiple performance characteristics including thrust force, surface roughness, tool wear and burr height (exit). The results show that the feed rate and the type of drill are the most significant factors which affect the drilling process and the performance in the drilling process can be effectively improved by using this approach.
Key words: hybrid composites; Grey relational analysis; Taguchi method