Dr. Niraj Kumar is currently a Professor in the Department of Mechanical Engineering, at Amity University, Noida, India. He obtained his Ph.D. from NIT, Hamirpur (H.P.). He has teaching and research experience of over 15 years. He has published papers in reputed international/national journals/conferences and also contributed chapters in many books. He has almost seven years of industrial experience in various organizations and has received much recognition and appreciation. Presently, he is a reviewer for multiple international SCI listed journals and member of the peer-reviewing committee for the evaluation of scientific projects for different countries.