Crankshafts are power shafts of engines with a complex geometry having crankwebs and crankpins. Crankshafts axis is offset from the centre. It converts the linear (reciprocating) motion of pistons into a rotary motion that can be transmitted through a drive line system. A crankshaft is subjected to several forces that vary in magnitude and direction (multiaxial loading). Bending stress and shear stress due to twisting are also common stresses acting on crankshafts. Torsional loadings appear as result of the power transmission known as torque. Due to the varying in magnitude and direction of load fatigue strength plays vital role in the crankshaft failure. A case study of a catastrophic failure of a crankshaft and a failure analysis under bending and torsion applied to crankshafts are presented.Keywords: Crankshaft, fatigue failure, bending, torsionCite this Article Kanani JB, Jani SS. Study on Crankshaft Failure: A Review. Trends in Machine Design. 3(1): 68–74p.
