Question: A steel center cracked panel is subjected to a uniform tensile stress of 500 MPa. The fracture toughness of the steel is 70 MPa

$A steel center cracked panel is subjected to a uniform tensile stress of 500 MPa. The fracture toughness of$

A steel center cracked panel is subjected to a uniform tensile stress of 500 MPa. The fracture toughness of the steel is 70 MPa vm, the yield stress is 1500 MPa and the width, W, is 1 cm. Plot K versus a and from this plot determine the maximum permissible crack size. Repeat this exercise on the same graph for W = 10 cm.

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