| Citation: | YU Jian, ZHANG Teng, HE Yuting, et al. Fatigue performance of adhesive-rivet hybrid repair of aluminum alloy plate[J]. Journal of Beijing University of Aeronautics and Astronautics, 2021, 47(11): 2399-2406. doi: 10.13700/j.bh.1001-5965.2021.0126(in Chinese)
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Aimed at the fatigue performance of aluminum alloy plate with hybrid adhesive-rivet single-sided patch, specimens with four different methods including un-repair, riveted repair, adhesive repair and adhesive-rivet repair were designed and subjected to fatigue tests. The finite element models of specimens were established, and the structural stress distributions and the crack length-crack tip Stress Intensity Factor (SIF) curves were obtained and compared with the test results. The results show that adhesive repair and adhesive-rivet repair methods can effectively reduce the stress level at the crack and the crack growth rate. Compared with un-repair specimens, the fatigue life of adhesive repair and adhesive-rivet repair methods is increased by 184.3% and 197.3%, respectively. For the adhesive-rivet repair, the rivets can inhibit the debonding of the adhesive layer, and the repair quality of this method is more reliable and effective than that of the adhesive repair method. The Finite Element Analysis (FEA) results are in good agreement with the test results, and the SIF error of FEA is approximately within 8%.
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