Investigation on shear and fatigue performance of CFRP/aluminum alloy single-lap adhesive joint
Investigation on shear and fatigue performance of CFRP/aluminum alloy single-lap adhesive joint
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DOI：
10.1016/j.tws.2023.111421
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发表时间：
2023-11
影响因子：
6.4
通讯作者：
Liming Duan;Wei Liang;Yongai Hou;Dayong Wang;J. Cui;Guangyao Li;Hao Jiang
中科院分区：
文献类型：
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作者：
Liming Duan;Wei Liang;Yongai Hou;Dayong Wang;J. Cui;Guangyao Li;Hao Jiang
胶接接头的尺寸参数对接头性能有着重要的影响。为了研究尺寸参数对CFRP/铝合金单搭接胶接接头力学性能和破坏行为的影响，采用西卡Power 497结构胶对T300 CFRP层压板和AA 5182铝合金板进行了不同尺寸参数下的胶接试验。进行了准静态剪切试验和疲劳试验，分析了试件的破坏行为和破坏机理。结果表明，当铝合金板或胶层强度不足时，增加铝合金板厚度或粘接区长度可有效提高胶接接头的粘接强度。胶接接头的剪切破坏模式主要包括胶接破坏、基材破坏和混合破坏。胶接接头的疲劳失效模式主要为胶接内聚失效和胶接粘结失效。在低应力水平下，铝合金板可能断裂。此外，本文的研究工作还可为胶接技术的工程应用提供科学指导。
The size parameter is quite significant for the performance of adhesive joint. In order to investigate the effect of size parameters on the mechanical property and failure behavior of CFRP/aluminum alloy single-lap adhesive joint, T300 CFRP laminate and AA5182 aluminum alloy sheet were bonded by Sika Power 497 structural adhesive under different size parameters. The quasi-static shear test and fatigue test were implemented, and the failure behavior and failure mechanism were analyzed. Results showed that the increase of aluminum alloy sheet thickness or bonding area length could effectively improve the bonding strength of adhesive joint, when the strength of the aluminum alloy sheet or the adhesive layer was insufficient. The shear failure modes of adhesive joint mainly included adhesive failure, base material failure and mixed failure. The fatigue failure modes of adhesive joint were mainly adhesive cohesion failure and adhesive adhesion failure. At low stress levels, the aluminum alloy sheet might fracture. In addition, this work can provide a scientific guidance for the engineering application of adhesive bonding technology.