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Unformatted text preview: sm value. The ρ and so crack C is the least likely to fail. • Question 2 2 out of 2 points A specimen of a 4340 steel alloy having a plane strain fracture toughness of 45 MPa m. It is √ known that the largest surface crack in this specimen is 0.75 mm long. What is the maximum stress this specimen can tolerate without fracturing. Assume that the parameter Y has a value of 1.0. Answer Selected Answer: 927 MPa Correct Answer: 927 MPa Respon se Feedbac k: Correct You must calculate the critical stress, σ...
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 Fall '06
 COREY
 Correct Answer, Crack, Fracture toughness, highest magnified stress

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