Fatigue failure results due to fluctuating stresses when the stress magnitude is
a) More than ultimate tensile strength
b) More than yield strength but lower than ultimate tensile strength
c) Lower than yield strength
d) None of these
Fatigue failure results due to fluctuating stresses when the stress magnitude is
a) More than ultimate tensile strength
b) More than yield strength but lower than ultimate tensile strength
c) Lower than yield strength
d) None of these