The failed crankshaft was inspected visually and macroscopically; care was taken to avoid damage of fractured
surfaces. The failed crankshaft was subjected to photo documentation, chemical analysis, optical microscopy
and micro-hardness measurement both at the failure zone and away from the failure zone. The fractured
surfaces were ultrasonically cleaned and examined with the help of a scanning electron microscope (SEM)
equipped with EDX facility. Conventional tensile tests carried out on specimens machined from the failed
crankshaft.