An experimental study has been carried out to investigate the behaviour of co-bonded carbon fibre reinforced plastics joints with a novel design incorporating a through the thickness local reinforcement. Different specimens were manufactured to investigate static and fatigue behaviour, as well as delamination size after impact and damage tolerance characteristics. The mechanical performances of the specimens with local reinforcement, consisting of the insertion of spiked thin metal sheets between co-bonded laminates, were compared with those ones obtained from specimens with purely co-bonded joints. This novel design demonstrated by tests that damage progression under cycling load results significantly delayed by the reinforcements. A significant number of experimental results were obtained that can be used to define preliminary design guidelines.

中文翻译：

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复合材料层合板增强粘结接头的试验研究

已经进行了一项实验研究，以研究具有全厚度局部增强的新型设计的共粘合碳纤维增强塑料接头的行为。制造了不同的试样来研究静态和疲劳行为，以及冲击后的分层尺寸和损伤容限特性。将局部加固试样的机械性能（包括在共粘合层压板之间插入尖刺薄金属板）与从具有纯共粘合接头的试样中获得的机械性能进行比较。这种新颖的设计通过测试证明，循环载荷下的损坏进展会因增强材料而显着延迟。获得了大量可用于定义初步设计指南的实验结果。