This book is based on part of a course on Non-Destructive Testing (NDT) presented to fourth year Mechanical and Aerospace undergraduate students in Nanyang Technological University, Singapore. This book will cover the principles and applications of the widely used Non-Destructive Testing techniques. The basic techniques will be covered i.e. Liquid Penetrant, Magnetic Particle Inspection, Eddy Current, Radiography and Ultrasonics. In addition the newer advanced techniques such as Acoustic Emission, Real Time Radiography, Time of Flight Ultrasonics, Thermography and Laser Shearography will be...