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Fatigue crack growth in 2024-T3 aluminum under tensile and transverse shear stressesThe influence of transverse shear stresses on the fatigue crack growth rate in thin 2024-T3 aluminum alloy sheets is investigated experimentally. The tests are performed on double-edge cracked sheets in cyclic tensile and torsional loading. This loading generates crack tip stress intensity factors in the same ratio as the values computed for a crack lying along a lap joint in a pressurized aircraft fuselage. The relevant fracture mechanics of cracks in thin plates along with the details of the geometrically nonlinear finite element analyses used for the test specimen calibration are developed and discussed. Preliminary fatigue crack growth data correlated using the fully coupled stress intensity factor calibration are presented and compared with fatigue crack growth data from pure delta K(sub I)fatigue tests.
Document ID
19950013074
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Viz, Mark J. (Cornell Univ. Ithaca, NY, United States)
Zehnder, Alan T. (Cornell Univ. Ithaca, NY, United States)
Date Acquired
September 6, 2013
Publication Date
September 1, 1994
Publication Information
Publication: NASA. Langley Research Center, FAA(NASA International Symposium on Advanced Structural Integrity Methods for Airframe Durability and Damage Tolerance, Part 2
Subject Category
Metallic Materials
Accession Number
95N19490
Funding Number(s)
CONTRACT_GRANT: NAG1-1311
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

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