[ABSTRACT] Fiber reinforced composites is being used more and more in every fields because of the combined property. And the methods on test and evaluating the property of fiber reinforced composites is also being concerned. In this paper, glass fiber composites specimen is loaded and the PCI-2 system is used to collect acoustic emission signals. The critical load is confirmed and the material is evaluated from the relation among load, time and the acoustic emission signal parameter.%纤维复合材料作为优异性能复合材料的代表在各行业得到越来越广泛的应用,其检测以及评价方法也随之得到广泛的关注与应用。通过对玻璃纤维环氧树脂复合材料拉伸加载,在加载过程中用声发射设备采集数据,利用声发射计数与载荷、时间间的相互关系对玻璃纤维复合材料进行评价,得到玻璃纤维/环氧树脂复合材料声发射的临界载荷以及强度等信息与声发射撞击计算之间的关系。
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