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2. A large plate is fabricated from a titanium alloy that has a plane strain fracture toughness of 55 MPa Vm and a yield strength
2. A large plate is fabricated from a titanium alloy that has a plane strain fracture toughness of 55 MPa Vm and a yield strength of 900MPa is loaded to a stress one half of its yield strength. Determine the minimum length of an edge crack that will lead to fracture of the titanium alloy. Assume that the value of the shape factor Y is 1.12. (6 marks)
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