本文研究了超声法测量石墨-环氧复合层压材料中的含湿量。本法使用从复合层压板前后两个表面反射的声波干涉获得的超声谱原理。通过时间区域内复杂射频讯号的富氏转换得到的频谱提供了关于层压材料的超声衰减特性信息。实验是在湿热条件下处理的8层单向层压和交义层压材料上进行的。研究结果表 In this paper, the ultrasonic measurement of graphite - epoxy composite laminates moisture content. This method uses the principle of sonography obtained by the acoustic interference reflected by the two front and back surfaces of the composite laminate. The spectrum obtained by Fourier-transform of complex RF signals in the time domain provides information on the ultrasonic attenuation characteristics of the laminate. Experiments were conducted on 8-layer unidirectional laminate and cross-laminate treated under wet and hot conditions. Study results table