The use of composite materials in structural applications has significantly expanded in recent years. The transport industry accounts for an increasingly larger share of the final structural weight of vehicles, as manufacturers pursue improvements in fuel economy, lighter more efficient designs, and reduction of emissions. However, the delamination of adhesively bonded composite joints causes premature failure of the bond, inhibiting the use of its full potential and leading to inefficient and over-designed components. A hybrid composite metallic material technology is studied in this work, a method inspired in the fibre metal laminate concept, and which combines the best properties of FRPs and metal alloys. The hybrid composite-metallic adherends aims to increase the joint strength in the through thickness direction, minimise peel stresses and limit delamination. The objective of this work was to evaluate the performance of hybrid joints, bonded with different adhesives by comparing them against a reference joint using a conventional Carbon fibre reinforced polymer (CFRP) adherend. The joints were experimentally tested using a universal testing machine for a crosshead speed of 1 mm/min. Numerical models were developed, using the ABAQUS software, to study the behaviour of all joints studied. The numerical predictions of failure loads and modes were compared to the experimentally obtained results.

中文翻译：

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环氧胶黏度对混合层压胶接强度的影响

近年来，复合材料在结构应用中的使用已大大扩展。随着制造商追求燃油经济性的提高，更轻便更有效的设计以及减少排放，运输业在车辆最终结构重量中所占的份额越来越大。但是，粘合复合接头的分层会导致粘合过早失效，从而无法充分利用其潜力，并导致效率低下和设计过度的组件。在这项工作中研究了一种混合复合金属材料技术，这种方法受到纤维金属层压板概念的启发，并结合了FRP和金属合金的最佳性能。杂化复合金属被粘物的目的是提高厚度方向的接合强度，最小化剥离应力并限制分层。这项工作的目的是通过使用常规碳纤维增强聚合物（CFRP）被粘物将参比接头与参比接头进行比较，来评估使用不同粘合剂粘合的混合接头的性能。使用万能测试机对接头进行了实验，十字头速度为1 mm / min。使用ABAQUS软件开发了数值模型，以研究所研究的所有关节的行为。将破坏载荷和模式的数值预测与实验获得的结果进行了比较。使用万能测试机对接头进行了实验，十字头速度为1 mm / min。使用ABAQUS软件开发了数值模型，以研究所研究的所有关节的行为。将破坏载荷和模式的数值预测与实验获得的结果进行了比较。使用万能测试机对接头进行了实验，十字头速度为1 mm / min。使用ABAQUS软件开发了数值模型，以研究所研究的所有关节的行为。将破坏载荷和模式的数值预测与实验获得的结果进行了比较。