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利用ＭＴＳ材料试验机和自制的低温实验装置，研究了玻璃布—环氧层板（ＧＦＲＰ）在０℃、－３０℃低温环境下的动态断裂性能。采用ＷＥＫ断裂模型来预测低温环境下ＧＦＲＰ材料的动态断裂韧性，给出了具体的实验测试步骤和理论分析方法，同时测定了单边切口试样拉伸情况下的断裂功。和ＷＥＫ模型计算值进行比较，这两种方法都反映出温度和加载速率的改变对玻璃布—环氧层板材料的断裂性能有明显的影响。在低温环境下，当应变速率提高时，断裂韧性明显增大；和室温情形相比，在低温环境下ＧＦＲＰ材料的断裂韧性增大。
The dynamic fracture behavior of glass cloth - epoxy laminate (GFRP) under low temperature of 0 ℃ and -30 ℃ was studied by using MTS material testing machine and self - made low temperature experimental equipment. The WEK fracture model was used to predict the dynamic fracture toughness of GFRP under low temperature. The experimental and theoretical analysis methods were given. The fracture work under uniaxial tensile test was also measured. Compared with the calculated value of WEK model, both of these methods show that the change of temperature and loading rate have obvious influence on the fracture property of glass cloth-epoxy laminate. At low temperature, the fracture toughness increases obviously as the strain rate increases. Compared with the room temperature, the fracture toughness of GFRP increases at low temperature.