Engineering, 08.11.2019 20:31 mshepherdmiller

Aspecimen of a 4340 steel alloy with a plane strain fracture toughness of 54.8 mpa (50 ksi ) is exposed to a stress of 1225 mpa (177700 psi). assume that the parameter y has a value of 0.98. (a) if the largest surface crack is 0.8 mm (0.03150 in.) long, determine the critical stress .

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Aspecimen of a 4340 steel alloy with a plane strain fracture toughness of 54.8 mpa (50 ksi ) is expo...