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It is required to design an engineering structure composed of members made of high strength steel plate (B = 65 mm, oys-700 MPa, KIC=

It is required to design an engineering structure composed of members made of high strength steel plate (B = 65 mm, oys-700 MPa, KIC= 80 MPa/m). The allowable working stress is based on the yield stress with a safety factor of 2. If the following flaw geometries can exist in service. i. Double edge crack ii. Semi-circular surface crack thumbnail. Embedded circular crack.

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