Failure investigation of an industrial crankshaft made of ductile iron

Chidambaram, S and Kamaraj, A (2017) Failure investigation of an industrial crankshaft made of ductile iron. Advances in natural and applied sciences, 11(8) . pp. 25-30.

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The design against fatigue of materials and components in rotary equipments is critical and attractive, as number of industrial rotary components failed by fatigue increased over the years in petroleum sector. Novelty of fine grain practice micro structure engineering and surface modification/surface engineering significantly increases the fatigue strength of industrial components. Root cause analysis of fatigue failure is conducted with possible outcome to prevent the failures. The high cycle fatigue life design of crankshaft approaches safe life design philosophy. In the present investigation, failure analysis of the crankshaft was analyzed to determine the cause of failure. Visual examinations reveals the brittle fracture with beach marks and metallographic examinations reveals the crack initiation at Type I graphite sharp boundaries in pearlitic matrix and crack propagated & accelerated till broken in to two pieces of crankshaft.

Item Type:Article
Official URL/DOI:
Uncontrolled Keywords:High cycle fatigue, Ductile iron casting, Type I Graphite, Fracture and Fatigue, Metallography
Divisions:Material Science and Technology
ID Code:7764
Deposited By:Sahu A K
Deposited On:22 Feb 2018 18:02
Last Modified:22 Feb 2018 18:02
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