A specimen of a 4340 steel alloy having a plane strain fracture toughness of 45 MPa (41 ksi) is exposed to a stress of 1000 MPa (145,000 psi). Will this specimen experience fracture if the largest surface crack is 0.75 mm (0.03 in.) long? Why or why not? Assume that the parameter Y has a value of 1.0.
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