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1) The crankshaft of a diesel truck engine made of ductile cast iron broke into two pieces at the crankpin portion after only 400 hours of use. 2) A failure analysis found fatigue was the dominant failure mechanism, with cracks initiating from the fillet region between the crankpin and web where stresses were highest. 3) The absence of surface hardening in this fillet region, along with the presence of nonspheroidal graphite in the microstructure, decreased the fatigue strength and led to premature fractu

Author

Aditya Afandi

Language

EN