Unformatted text preview: shaped discs if diameter 2 a = 2 mm. If the beam has dimensions shown, and the force required to debond the joint is F = 80 kN. Assume K = σ √ πa for disc-shaped bubbles. 3. The fuselage of a passanger aircraft can be considered to be an internally pressurized thin walled tube of diameter 7 m and wall thickness of 3 mm. It is made from aluminum alloy plate with a fracture toughness K c of 1000 MN m-3 / 2 . At cruising altitude, the internal gauge pressure is 0.06 MN m-2 . Multiple fatigue cracks initiated at a horizontal row of rivet holes, and linked to form a single long axial through thickness crack in the fuselage. Estimate the critical length at which this crack will run, resulting in the break-up of the fuselage....
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- Fall '09
- Mechanical Engineering, Fracture mechanics, Fracture toughness, YEDiTEPE UNIVERSITY, Fethi Okyar Room, Fracture Mechanics Fall’09