Rahman Mahfuz Bin, Zhu Lvtao
College of Textile Science and Engineering (International Institute of Silk), Zhejiang Sci-Tech University, Hangzhou 310018, China.
Shaoxing Keqiao Research Institute, Zhejiang Sci-Tech University, Shaoxing 312000, China.
Materials (Basel). 2022 Mar 21;15(6):2311. doi: 10.3390/ma15062311.
This study presents an experimental investigation on the low-velocity impact response of three-dimensional integrated woven spacer sandwich composites made of high-performance glass fiber reinforced fabric and epoxy resin. 3D integrated woven spacer sandwich composites with five different specifications were produced using a hand lay-up process and tested under low-velocity impact with energies of 5 J, 10 J, and 15 J. The results revealed that the core pile's heights and diverse impact energies significantly affect the stiffness and energy absorption capacity. There is no significant influence of face sheet thickness on impact response. Moreover, the damage morphologies of 3D integrated woven spacer sandwich composites under different impact energies were analyzed by simple visualization of the specimen. Different damage and failure mechanisms were observed, including barely visible damage, visible damage, and clearly visible damage. Moreover, it was noticed that the damage of 3D integrated woven spacer sandwich composites samples only constraints to the impacted area and does not affect the integrity of the samples.
本研究对由高性能玻璃纤维增强织物和环氧树脂制成的三维集成编织间隔层夹芯复合材料的低速冲击响应进行了实验研究。采用手糊工艺制备了五种不同规格的三维集成编织间隔层夹芯复合材料，并在5 J、10 J和15 J的能量下进行了低速冲击试验。结果表明，芯柱高度和不同的冲击能量显著影响刚度和能量吸收能力。面板厚度对冲击响应没有显著影响。此外，通过对试样的简单可视化分析了三维集成编织间隔层夹芯复合材料在不同冲击能量下的损伤形态。观察到了不同的损伤和失效机制，包括几乎不可见损伤、可见损伤和清晰可见损伤。此外，还注意到三维集成编织间隔层夹芯复合材料样品的损伤仅局限于冲击区域，不影响样品的完整性。
