Q
Which of the following is not a characteristic observed in material failure by fatigue fracture ?
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A
A. Plastic deformation of material does not occur
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B
B. Initiation of crack from below the surface does not occur
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C
C. Initiation of crack occurs on the surface of the machine part
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D
D. Presence of both rough & smooth zone with conchoidal markings in smooth zone of the
Correct Answer:
B. B. Initiation of crack from below the surface does not occur
