Experimental study on ultrasonic three-point bending fatigue of CFRP under ultraviolet radiation
Experimental study on ultrasonic three-point bending fatigue of CFRP under ultraviolet radiation
复制标题
DOI：
10.1016/j.engfracmech.2020.107435
复制
发表时间：
2021-02-01
影响因子：
5.4
通讯作者：
Cheng, Li
中科院分区：
文献类型：
--
作者：
Ding, Junliang;Cheng, Li
利用超声共振装置研究了正交平纹编织复合材料在紫外光辐照下的VCHF疲劳特性。采用复合冷却方式保证疲劳试验在连续加载条件下进行。绘制了不同可靠性水平下的S-N曲线和疲劳寿命生存概率分布。紫外线辐射降低了聚合物的力学性能，增加了聚合物的脆性，加速了刚度退化过程，缩短了疲劳寿命。在飞机复合材料结构件的实际应用过程中，必须高度重视碳纤维增强塑料耐候性的提高。
The VCHF fatigue characteristics of orthogonal plain weave composite material under UV radiation had been carried out by an ultrasonic resonance device. A compound cooling method was used to ensure the fatigue test working under continuous loading conditions. S-N curves under different reliability levels, and fatigue life survival probability distribution were plotted. UV radiation reduced the mechanical properties, increased the brittleness of polymer, accelerated the stiffness degradation process and shorted the fatigue life. In the actual application process of aircraft composite structural parts, great importance must be attached to the improvement of weather resistance of CFRP.