S. Suresh Kumar is presently working as an associate professor, in the Department of Mechanical Engineering, at Kalasalingam Academy of Research and Education, Tamil Nadu, India. His area of research includes the fabrication of materials, processing, and characterization of materials. He has published more than fifty research papers in international journals and conferences. S. Thirumalai Kumaran is currently working as an associate professor, in the Department of Mechanical Engineering, at PSG Institute of Technology and Applied Research, India. He has also worked as a Research Professor at the School of Mechanical Engineering, Yeungnam University, South Korea. He has published over 100 SCI/Scopus-indexed journals with over 2000 citations.