在此基础上提出一种新型的损伤参量，该损伤参量结合了剪应力功的概念和疲劳破坏的微观机制。
Based on this a new damage parameter, which combines shear stress work and micro-mechanism is provided.
同时，在各个冲击功下，材料的磨损机理在冲击应力的循环作用下随时间发生明显变化。
Furthermore, at all impact power, the wear mechanism of the material changes distinctively with the time under the cyclic impact stress.
结果表明，在热湿条件下老化结束后，材料的断裂应力、初始模量和断裂比功的损失率分别大于44%、65%和51%；
The results showed the loss rates of stress, initial modulus and breaking work were more than 44%, 65% and 51% after hydrothermal aging test respectively;
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