国产炭纤维复合材料层合板高温单钉连接性能试验

对国产CCF300/GW300复合材料层合板与铝合金板单钉连接结构在常温以及200℃和300℃高温环境下的拉伸性能进行试验研究,分析了连接试件的高温拉伸破坏行为,以及温度、铺层形式、连接螺栓直径对于条件挤压强度的影响。研究发现,高温越高其条件挤压强度保持率越低,300℃时条件挤压强度仅为常温的30%;90°铺层比例越高...

Experiment on Tensile Properties of Domestic Carbon Fiber Reinforced Composite Laminates with Single Bolt Joint Under High Temperature

The paper studied the tensile performance of the single bolt joint structures with domestic carbon fiber CCF300/GW300 laminates and aluminum alloy plates in the conditions of room temperature and 200 ℃,300 ℃.The tensile failure behavior of the joint structures at high temperature was analyzed.The effect of the temperature,ply sequence and bolt diameter on the off-set bearing strength was discussed.It shows that the off-set bearing strength retention is lower while the temperature increases.The off-set bearing strength at 300 ℃ is only 30% of that at room temperature.The high temperature joint performance decreases while the proportion of 90° plies gets lower.The bolt diameter has great effect on the bearing strength.For the modulus and strength of the angle plies(not ±45°) are low,delimitation would take place easily for the laminates with angle plies on the surface under bearing load.