T字型三维机织物设计及其复合材料弯曲性能

摘要

为探究不同梁高的T字型三维整体机织复合材料的弯曲力学性质，经合理设计，使用玄武岩长丝束在普通小样织机上，低成本织造3种不同梁高的T字型三维整体机织物，采用真空辅助树脂传递模塑成型工艺，制备T字型三维整体机织复合材料。用电子万能试验机测试，得到相应的载荷位移曲线和吸收能量位移曲线。由实验结果可知，梁越高的T型三维整体机织复合材料所承受的载荷和吸收的能量也越高，且不同梁高的T型三维整体机织复合材料也表现出不同的弯曲破坏模式。该研究结果表明，梁高对T字型三维整体机织复合材料的弯曲载荷、吸能和破坏模式影响显著。%For exploring the bending properties of T⁃shaped three⁃dimensional integrated woven composites with different beam depths, by reasonable design, three kinds of T⁃shaped three⁃dimensional integrated woven fabrics with different high beam depths are woven from basalt fiber filaments on a common loom with low cost. The T⁃shaped three⁃dimensional integrated woven composites with different beam depths were produced by vacuum assisted resin transfer molding. Then, the composites were tested by an electronic universal testing machine, and the load⁃displacement curves and absorption energy⁃displacement curves were obtained. Results showed that the higher the beam depth, the greater the values of the load and absorbed energy on the composites. The T⁃shaped three⁃dimensional integrated woven fabrics with different high beam depths showed different bending failure patterns. The results indicated that the bending load, energy absorption and failure pattern of the T⁃shaped three⁃dimensional integrated woven composites were significantly affected by the beam depth.