The damage parameter versus fatigue life figures, which were plotted based on the stress?strain analysis and test results, could be used to predict the fatigue lives of the composite with different winding angles.

• 根据双轴载荷条件下管状试样的应力-应变分析及双轴疲劳实验结果；绘制出了基于临界平面的多轴损伤参量与疲劳寿命关系图；可对不同缠绕角的复合材料疲劳寿命进行预测.