编织复合材料的冲击损伤与断裂行为研究

Research on the Impact Damage and Fracture Behaver of Braided Composites

本文利用冲击加载实验装置对含 V型裂纹碳纤维编织复合材料梁的冲击损伤与断裂行为进行了实验研究 ,记录了冲击载荷的时间历程、梁的动态位移变化以及裂纹尖端损伤的动态应变演化历史 ,确定了裂纹尖端的应变能密度分布 .

An experiment on the damage and fracture of the carbon fiber braided composite beam with 'v' shape crack under impact load was made. The period of impact load, dynamic displacement of the beam and the history of changing strain were recorded, and distribution of strain energy was decided. Moreover, SEM photographs of composite crack was analyzed from micro mechanisms.