A review on vibration analysis of crankshaft of internal combustion engine

Crankshaft is mechanical component with a complex geometry which transforms reciprocating motion into rotational motion. The conversion of reciprocatory motion of the crank to rotational motion in an IC engine is done by the crankshaft. Crankshaft plays a pivotal role in its functioning. The stress and fatigue that the crankshaft can handle decides the satisfactory working period of crankshaft. Any defect in the crankshaft deteriorates the performance of the engine. Faults in crankshafts can result in degradation of the engine and lead to losses in terms of revenue. Hence, it is important to analyze the crankshaft and predict its failures before a severe catastrophe occurs. Vibrations give a good amount of information on the characteristics of the vibrating structures and hence vibration analysis can be used to inspect and evaluate the crankshaft. In this paper, a brief review of analyzing crankshaft by means of vibration analysis which forms an integral part in almost all the fields is done.