材料科学
凯夫拉
复合材料
消散
粘弹性
膨胀的
脉冲(物理)
变硬
剪切模量
结构工程
复合数
物理
工程类
量子力学
热力学
作者
Dong Ma,Cheng Wang,Wenlong Xu,Shiyu Jia,Fangfang Qi
标识
DOI:10.1016/j.jmrt.2023.09.217
摘要
A novel shear thickening gel with micro-scale hard/soft interface structure and low reaction temperature was proposed in this article. The gel was named TH and used as core material within Kevlar fabrics. Storage modulus of TH was proved to increase by around two orders with increasing of shear frequency, and dynamic properties indicated that TH could dissipate or store more energy. TH can adhere with Kevlar fabrics well and satisfactorily fulfill the gap between fabrics. As a result, shock wave peak pressure and positive impulse decreased markedly. Wavelet decomposition analysis show that high frequency energy was filtered by protection materials. Meanwhile, impact resistance test suggested the existence of TH changed the stress propagation routes and avoided pulling out for Kevlar fabrics. Samples filled with TH demonstrated a better shock wave mitigation ability and impact resistance. Energy dissipation structures with TH have a promising prospect in the application of defending area.
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