Surface Roughness Evaluation in Drilling Hybrid Metal Matrix Composites
The present study investigates the influence of machining parameters, such as cutting speed and feed rate, and wt % of reinforcement on surface roughness in drilling of hybrid metal matrix composites. Experiments are conducted on Al 356- aluminum alloy re
- PDF / 474,177 Bytes
- 8 Pages / 439.37 x 666.142 pts Page_size
- 37 Downloads / 197 Views
Abstract The present study investigates the influence of machining parameters, such as cutting speed and feed rate, and wt % of reinforcement on surface roughness in drilling of hybrid metal matrix composites. Experiments are conducted on Al 356- aluminum alloy reinforced with silicon carbide of size 25 μ and Mica of size 45 μ. The experiments have been conducted on vertical computer numeric control (CNC) machining center. The Taguchi’s orthogonal array and analysis of variance (ANOtVA) are employed to investigate the drilling parameters of hybrid composites. A second-order model has been established between the cutting parameters and surface roughness using response surface methodology. The experimental results reveal that the most significant machining parameter for surface roughness is feed rate followed by cutting speed. The influence of different parameters and their interactions are studied and presented in this study. Keywords Taguchi method • Hybrid composites • Surface roughness • Response surface method
1 Introduction Metal matrix composites (MMC) have become a large leading material in composite materials. Particle reinforced aluminum MMC have received considerable attention due to their excellent engineering properties. Several investigations into the machining aspects of MMCs have been carried out and reported. Hybrid MMCs are of recent kind and the literature available on their machining is inadequate. Noorul Haq et al. [1] T. Rajmohan (*) Sri Chandrashekarendra Saraswathi Visva Mahavidyalaya University, Kanchipuram 631561, India e-mail: [email protected] K. Palanikumar Sri Sairam Institute of Technology, Chennai 600044, India e-mail: [email protected] G. Harish Indian Institute of Technology Madras, Chennai 600036, India S. Sathiyamoorthy et al. (eds.), Emerging Trends in Science, Engineering and Technology, Lecture Notes in Mechanical Engineering, DOI: 10.1007/978-81-322-1007-8_29, © Springer India 2012
325
326
T. Rajmohan et al.
investigated the optimization of drilling parameters on drilling Al/SiC MMC with multiple responses based on orthogonal array with gray relational analysis. Drilling tests are conducted using TiN coated HSS twist drills of 10 mm diameter under dry condition. Further the drilling parameters namely cutting speed, feed, and point angle are optimized with the considerations of multi responses such as surface roughness, cutting force, and torque. Tosun [2] studied the statistical analysis of process parameters for surface roughness in drilling Al/SiC metal matrix composite using Taguchi method and suggested that Taguchi parameter design is an efficient and effective method for optimizing surface roughness performance. Bushan et al. [3] investigated the influence of cutting speed, depth of cut, and feed rate on surface roughness during turning of 7075 Al alloy and 10 wt % SiC particulate metal-matrix composites using tungsten carbide and polycrystalline diamond. The Taguchi method and response surface methodology (RSM) are used in various areas i
Data Loading...
