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Fatigue crack growth in reinforced panels with initial corner cracks |
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| Authors: | T.R. Brussat S.T. Chiu J.L. Rudd M. Creager |
| Affiliation: | Advanced Structures Technology Dept., Lockheed-California Company, Burbank, CA 91520, U.S.A. Structural Integrity Branch, Structures and Dynamics Division, Air Force Wright Aeronautical Laboratories, WPAFB, 0H 45433, U.S.A. Del West Engineering, Chatsworth, CA 91311, U.S.A. |
| Abstract: | Fatigue crack growth test results are presented for 42 structural sheet-stringer specimens with 0.050 in. initial corner cracks at fastener holes. The method of combining known stress intensity factor and stress concentration factor solutions is used to predict the sequences of growth, arrest and reinitiation of cracks leading to failure of these panels. The reliability of this commonly-used predict:ion approach is assessed by comparisons between predictions and the test data. |
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