the reciprocating displacement of the piston in to a rotary motion of the crank. The life of crankshaft depends on its strength to wear stress and loads. Any defect in the crankshaft (e.g. cracks, notch) deteriorates the performance of the engine. In this paper, a brief review of the importance of analyzing crankshaft by means of vibration analysis which forms an integral parts in almost all the fields is done. Keywords Crankshaft, ANSYS Software, Vibration analysis, crankshaft defect, fast Fourier
forms. The most common is crystals, but they are also found as plastics and ceramics. Piezoelectric sensors have proven to be versatile tools for the measurement of various processes. They are used for quality assurance, process control and for research and development in many different