Book excerpt: In order to identify unusual vibration occurrences and assess the general health of the test object, vibration analysis is a procedure that tracks vibration levels and looks into the patterns in vibration signals within a component, piece of equipment, or building. It is frequently conducted on both the frequency spectrum, which is derived by applying Fourier Transform to the time waveform, as well as the time waveforms of the vibration signal directly. Mechanical vibration Analysis should present 50% of any condition monitoring program. This book include a practical guide to vibration analysis to prepare practitioners for levels I II & III to become certified analyst. Numerous examples with photos are included to present how to detect different types of equipment and assets failure include: bearing, shafts misalignment, unbalance, rotor problems, electric motors and more using spectrum analysis technique.