Mechanical engineering studies the principles of engineering, physics and materials science in order to design and create mechanical systems. The core aspects of this subject are structural analysis, thermodynamics, kinematics and electricity. Mechanical engineering contributes significantly to other fields such as civil engineering, industrial engineering, chemical engineering, and many others. Different approaches, evaluations, methodologies and advanced studies on mechanical engineering have been included herein. In this book, using case studies and examples, constant effort has been made to make the understanding of the difficult concepts of mechanical engineering as easy and informative as possible, for the readers.