An unsupported cracked plate repaired with a reinforcement bonded on one side may experience considerable out-of-plane bending due to the load-path eccentricity. This out-of-plane bending causes the stress intensity factor at the crack tip to vary significantly through the plate’s thickness with a maximum value attained at the un-patched side of the crack. Even though significant analytical work has been done in the past to evaluate these thickness-varying stress intensity factors, however, to the authors’ knowledge, little work has been done to characterize the fatigue crack growth in a plate with a single-sided repair. The purposes of the present work are to (i) assess the accuracy of the available analytical methods for predicting the stress intensity factors of the panels with a single-sided repair and more importantly, and (ii) characterize the fatigue crack growth in these panels, using test results generated recently under the Composite Repair of Aircraft Structures (CRAS) program.
On the Characterization of Fatigue Crack Growth in a Plate With a Single-Sided Repair
Contributed by the Materials Division for publication in the JOURNAL OF ENGINEERING MATERIALS AND TECHNOLOGY. Manuscript received by the Materials Division May 12, 2003; revision received September 26, 2003. Associate Editor: S. Mall.
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Duong, C. N., and Wang, C. H. (March 18, 2004). "On the Characterization of Fatigue Crack Growth in a Plate With a Single-Sided Repair ." ASME. J. Eng. Mater. Technol. April 2004; 126(2): 192–198. https://doi.org/10.1115/1.1647129
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