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Metallurgical Engineering · Q1

Metallurgical Testing and Inspection

Engineering and GATE · Metallurgical Engineering · question 1

Q1

Fatigue life is expected to increase by

A.
increasing the size of the sample
B.
smooth polishing of the surface of the sample
C.
having compressive residual stresses at the surface
Answer
D.
having tensile residual stresses at the surface

Answer: Option C

Solution

Answer: Option C
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