Dr Farrukh Hafeez is PhD from Jamia Millia Islamia in materials. He has been in teaching profession for the last 20 years and has experience of serving some of the prestigious institutions of India and abroad. In the 20 years he has taught graduate and post graduate courses of mechanical engineering in universities of India such as; Aligarh Muslim University (a central Government University), Institute of Technology and Management Gurgaon, IIT Delhi, Jamia Millia Islamia New Delhi , International University of Shaqra in Saudi Arabia Presently he is serving as an Associate Professor in Aligarh Muslim University. His experience in writing this book will be helpful for engineering graduate and Diploma classes. The book will be extremely helpful as a text and for establishing Strength of Materials and Materials science laboratories. Mohd Arif is M.Tech in thermal materials engineering having an industrial experience of about 20 years in handling, developing and testing of mechanical equipment’s and thermal materials within and outside India. For the last eleven years he is working as an Assistant Professor in Aligarh Muslim University and has been engaged in various teaching and practical laboratories of Mechanical engineering.