论文部分内容阅读
对含有模拟制造分层缺陷的复合材料层压板的压—压疲劳试验表明，层压板有较好的压—压疲劳性能，其低于１０６循环的Ｓ—Ｎ曲线在单对数坐标下呈直线关系。低应力水平和寿命高于１０６循环的试件的剩余压缩强度的下降量低于１０％。超声波Ｃ扫描的结果显示，试件的损伤扩展一般是由边缘分层开始的。
Compression-compression fatigue tests on laminates containing laminates that simulate delamination defects showed that laminates had better compression-compression fatigue properties with S-N curves below 106 cycles in a straight line at single logarithmic coordinates relationship. The decrease in residual compressive strength of specimens with low stress levels and lifetimes greater than 106 cycles was less than 10%. Ultrasound C-scan results show that the damage extension of the specimen is usually started by the edge of the stratification.