2. A 1 m long structural member of 7075-T6 aluminum alloy has a rectangular cross section...

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2. A 1 m long structural member of 7075-T6 aluminum alloy has a rectangular cross section 10 mm thick by 50 mm wide. The member must support a load of 135 kN in static tension. A thumbnail surface crack 2.5 mm deep and 7.5 mm long at the surface has been found during an inspection. Given the material properties: Yield stress oys = 520 MPa; Ultimate strength TS = 575 MPa; and Fracture Toughness K = 35 MPam; Ealstic modulus E = 72 GPa. a. Check if the failure would be expected, using FAD. b. Estimate the existing safety factor under these conditions. 2. A 1 m long structural member of 7075-T6 aluminum alloy has a rectangular cross section 10 mm thick by 50 mm wide. The member must support a load of 135 kN in static tension. A thumbnail surface crack 2.5 mm deep and 7.5 mm long at the surface has been found during an inspection. Given the material properties: Yield stress oys = 520 MPa; Ultimate strength TS = 575 MPa; and Fracture Toughness K = 35 MPam; Ealstic modulus E = 72 GPa. a. Check if the failure would be expected, using FAD. b. Estimate the existing safety factor under these conditions.