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Question: 5 a large plate is fabricated from a steel alloy...

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5. A large plate is fabricated from a steel alloy that has a plane strain fracture toughness of 59 MPam. If, during service use, the plate is exposed to a tensile stress of 220 MPa, determine the minimum length ofa surface crack that will lead to fracture. Assume a value of 1.05 for Y· (15 pts) め
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