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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 .并利用扫描电镜对其断裂表面进行了的微观分析
In this paper, the impact damage and fracture behavior of carbon fiber braided composite beams with V-shaped crack were experimentally studied by impact loading device. The time history of impact load, the dynamic displacement of beam and the evolution history of dynamic strain at crack tip were recorded. The strain energy density distribution at the tip of the crack was determined, and the microstructure of the fracture surface was analyzed by scanning electron microscopy