Continuous carbon fiber reinforced thermoplastic composite material welding joint temperature monitoring method

The invention discloses a temperature monitoring method for a continuous carbon fiber reinforced thermoplastic composite material welding joint, which comprises the following steps of: performing surface treatment on an upper joint pair and a lower joint pair which are directly welded by ultrasonic waves, then fixing electrodes, and putting the electrodes into a temperature control box; the signal processing end is used for collecting and analyzing signals obtained by the electrodes, the signals are compared with a temperature-resistance curve obtained through experiments, and temperature monitoring of the welding joint is achieved. On the premise that no extra structure is added, cost is low, operation is convenient and fast, and stability and reliability are achieved, the internal temperature of the welded joint is monitored through the performance of materials. 本发明公开了一种连续碳纤维增强热塑性复合材料焊接接头温度监测方法，对完成超声波直接焊接的上接合偶对和下接合偶对进行表面处理，然后固定电极，并放入温控箱内；利用信号处理端采集并分析电极得到的信号，与实验获得的温度-电阻曲线进行比较，实现焊接接头的温度监测。本发明在不增加额外结构，成本较低，操作便