Failure investigation and redesign of crankshaft and cylinder

Abstract

The crankshaft is an essential component in reciprocating pump, which is widely used in an automobile and reciprocating pumps. The most common modes of crankshaft failure are fatigue failure. During its operation, the crankshaft is always subjected to a cyclical load. Besides, the bending and shear load are also typical loads on the crankshaft. Due to the effect of these loads, the crankshaft fails and causes a substantial economic and loss of life. Therefore, predicting the more accurate design of the crankshaft is essential to save the economic and life losses. This report discusses several existing approaches to redesign of crankshaft. Various analytical and experimental approaches used to find the failure due to bending stress.. The review shows that crankshaft failures are the result of bending stress. The crack initiation can occur due to high-stress concentration or improper design of crankshaft . After successfully analyzing of bending stress we calculate the safe values for crankshaft design due to which failure of crankshaft gets reduced.