Continuous ultrasonic welding is a promising high-speed and energy-efficient joining method for thermoplastic composite structures. Our aim was to identify and understand differences between the static and continuous ultrasonic welding process for thermoplastic composites. In particular, melting of the interface, consumed power and energy density, temperature evolution at the weld interface, and optimum welding conditions for both types of processes were investigated. This was done for three combinations of welding force and vibrational amplitude, parameters which are known to have a significant effect in both welding processes. Our results showed that for the continuous process the amount of non-welded area under the sonotrode remains constant, while for the static process the amount of non-welded area gradually decreases to zero. Additionally, the optimum vibration times and welding speeds in both processes are similar.

连续超声焊接是用于热塑性复合材料结构的一种有希望的高速，节能连接方法。我们的目的是识别和理解热塑性复合材料的静态和连续超声焊接工艺之间的差异。特别是，研究了两种类型工艺的界面熔化，消耗的功率和能量密度，焊接界面处的温度变化以及最佳焊接条件。这是针对焊接力和振动幅度的三种组合而完成的，这些参数在两个焊接过程中均具有显着影响。我们的结果表明，对于连续过程，超声焊极下的非焊接区域数量保持恒定，而对于静态过程，非焊接区域的数量逐渐减少至零。另外，