2.5维机织复合材料冲击剩余强度试验研究

Test of Wrap Residual Strength of 2.5D Woven Composites with Initial Impact Damage

开展2.5维复合材料冲击后拉伸剩余强度的试验研究,获得了各种工况下的载荷位移曲线和经向拉伸剩余强度,通过试验结果分析温度和冲击能量对2.5维机织复合材料经向剩余强度的影响。研究发现温度一定时,冲击能量越大,经向拉伸剩余强度越小;冲击能量一定时,经向拉伸剩余强度随着温度上升而降低。

In this paper,the tensile residual strength of 2.5D composites after impact is tested,load-displacement curves and wrap tensile residual strength under various working conditions are obtained.The effects of temperature and impact energy on the warp residual strength of 2.5D woven composites are analyzed through the test results.It is found that the greater the impact energy is,the smaller the warp residual strength is.When the impact energy is constant,the warp residual strength decreases with the increase of temperature.