The aim of this study is to investigate ultrasonic welding in carbon fibre-reinforced thermosetting composites by optimizing process parameters, specifically sonotrode pressure and ultrasound application time. Joining is accomplished by incorporating electrospun veils, consisting of either polyether sulfone or nylon, into the outer layers of the composite laminates. Single lap shear tests were conducted to evaluate the mechanical strength of the joints and identify failure mechanisms. The results highlight a significant influence of the thermoplastic interlayer. Polyether Sulfone ensures consistently lower mechanical properties, while Nylon contributes to higher strength. In both scenarios, these joints show promising applications, particularly in sports automotive contexts where rapid and reliable part welding is crucial.

中文翻译：

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使用尼龙基或 PES 热塑性中间层优化碳/环氧树脂复合材料的超声波焊接工艺

本研究的目的是通过优化工艺参数，特别是超声焊极压力和超声应用时间，研究碳纤维增强热固性复合材料的超声焊接。连接是通过将由聚醚砜或尼龙组成的静电纺丝纱纳入复合材料层压板的外层来实现的。进行单搭接剪切试验以评估接头的机械强度并确定失效机制。结果凸显了热塑性中间层的显着影响。聚醚砜可确保始终较低的机械性能，而尼龙有助于提高强度。在这两种情况下，这些接头都显示出有前景的应用，特别是在运动汽车环境中，快速可靠的零件焊接至关重要。