8.5 A specimen of a 4340 steel alloy with a plane strain fracture toughness of 54.8 MPa√m (50 ksi Vin.) is exposed to a stress of 1030 MPa (150,000 psi). Will this specimen experience fracture if the largest surface crack is 0.5 mm (0.02 in.) long? Why or why not? Assume that the parameter Y has a value of 1.0.