提出了一种非接触式的内耗测量方法。通过对碳纤维材料试样进行交变静电激发,在显微系统下记录强迫振动过程的高帧率图像,完成了微纳尺度材料内耗测量系统的设计。实验结果表明该系统能实现低频和高频内耗的非接触式测量,测量频率范围大,系统扩展性强。 A non-contact internal friction measurement method is proposed. Through the alternating electrostatic excitation of the carbon fiber sample, the high-frame-rate image of the forced vibration process was recorded under the microscopy system, and the design of the micro-and nano-scale material internal friction measurement system was completed. Experimental results show that the system can achieve non-contact measurement of low frequency and high frequency internal friction, and has a large measurement frequency range and strong system expansibility.