A large flat plate is subjected to constant-amplitude uniaxial cyclic tensile and compressive stresses. Compute the final critical surface crack length if the fatigue life must be a minimum of 7.0 x 10^5 cycles. Assume the initial maximum edge surface crack length of 1.80 mm and a maximum tensile stress of 160 MPa. Assume m = 1.8 and A = 7.5 x 10^-13 in MPa and meter units. Assume Y = 1.25.

Elements Of Electromagnetics
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Problem 4. A large flat plate is subjected to constant-amplitude uniaxial cyclic tensile and compressive stresses. Compute the final critical surface crack length if the fatigue life must be a minimum of 7.0 x 10^5 cycles. Assume the initial maximum edge surface crack length of 1.80 mm and a maximum tensile stress of 160 MPa. Assume m = 1.8 and A = 7.5 x 10^-13 in MPa and meter units. Assume Y = 1.25.

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