A closed-end cylinder is made of 7079-T651 aluminum alloy. The cylinder has an inside diameter D = 1000 mm, has a wall thickness h = 20 mm, and is subjected to an internal pressure p = 6.0 MPa. Determine the length of crack (2a) required to cause fracture at this pressure if plane strain conditions are assumed to be satisfied. The inside of the cylinder is covered with a thin layer of rubber to prevent leakage. Determine whether or not conditions are satisfied for a plane strain state of stress.
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