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利用落锤装置，对玻纤／环氧和碳纤／环氧两种复合材料层合板进行了低速低能量的冲击实验研究。利用传感器技术记录了落锤冲击试样过程中的速度曲线，计算了冲击动能和材料损伤时的能量吸收。通过数学处理得到了冲击载荷和冲击点位移曲线。测量了层合板受冲击后的剩余弯曲强度和剩余弯曲弹性模量，得出了两种复合材料层合板的能量吸收门槛值。结果表明，碳纤／环氧的能量吸收门槛值比玻纤／环氧低，但是前者有较宽的能量吸收容限。和剩余弹性模量下降相比，冲击载荷引起的损伤对弯曲剩余强度下降影响更大。
Low-energy and low-energy impact experiments on glass / epoxy and carbon fiber / epoxy composite laminates were carried out by using a drop weight device. The velocity curve of the drop-hammer impact specimen was recorded by the sensor technology, and the impact energy and the energy absorption in the material damage were calculated. Through the mathematical processing, the impact load and impact point displacement curve are obtained. The residual flexural strength and residual flexural modulus after impacting were measured. The energy absorption threshold of the two composite laminates was obtained. The results show that the energy absorption threshold of carbon fiber / epoxy is lower than that of glass fiber / epoxy, but the former has a wider energy absorption capacity. Compared with the decrease of residual elastic modulus, the damage caused by impact load has a greater influence on the decrease of bending residual strength.