【摘要】 为了解决缝合复合材料在航空航天结构中的应用问题,对国内生产的缝合/树脂膜渗透成型工艺复合材料层合板在三种不同环境条件下的低速冲击后压缩性能进行试验研究。结果表明,缝合改变了含冲击损伤层合板的压缩破坏机理,可以大幅度提高层合板在干态常温下的冲击后剩余压缩强度,但是对湿态高温下层合板的冲击后剩余压缩强度影响不大;缝合方向对冲击损伤面积和剩余压缩强度的影响较小,其中以0°缝合较为有利。更多还原

【Abstract】 In order to solve the application of stitched composites in aircraft structures, experimental studies were carried out on the post-impact compressive properties of internal stitched laminates made by resin film infusion(RFI) process. Three different environments were used in this test. It shows that stitching changes compressive mechanisms of the laminates after low velocity impact. Post-impact compressive strength is improves highly through stitching at dry / normal temperature. But stitching has little influence on residual compressive strength of laminates after low velocity at wet / high temperature. Damage areas and post-impact strength are little affected by stitching directions. Stitching in 0 degree is much better than that in other directions.更多还原