7861Chemical EngineeringMedium
Which of the following is not a characteristic observed in material failure by fatigue fracture?
AInitiation of crack from below the surface does not occur
BPresence of both rough & smooth zone with conchoidal markings in smooth zone of the
CPlastic deformation of material does not occur
DInitiation of crack occurs on the surface of the machine part
Correct answer
A. Initiation of crack from below the surface does not occur
Explanation
The correct answer is Initiation of crack from below the surface does not occur.