对智能复合材料单向疲劳失效的研究

Research of Failure on the Fatique of Unidirection Smart Composite

对智能复合材料在经受单向拉－拉试验产生的光纤疲劳失效性能进行了研究，对智能复合材料内的光纤方位角分别为０°、４５°、９０°进行了应力寿命试验。在输入应变能量的基础上提出了疲劳失效准则。

Fatique behaviour of fiber optic/composite under tension tension loading is investigated. Stress/life experimental data were obtained for fiber optic orientaion angle θ of 0°,45°,90°. A fatique failure criterion is proposed based on the input strain energy. This crtiterion can be used to adjust the fiber optic orientation angle and to analyse stress ratio of the composite.