A comprehensive study on the impact behaviour of UHMWPE woven fabrics is presented in this paper, which consists of four parts: geometric measurement of fabric parameters, tensile testing of constituent yarns, impact testing of fabrics, and numerical modelling of fabrics subjected to impact loading. Two fabric materials, i.e. a plain weave fabric made of Spectra^Ⓡ 1000 fibres and a 4-harness satin weave fabric made of Dyneema^Ⓡ SK75 fibres, were examined. Firstly, the geometric features of fabrics, such as yarn cross-sections and weave profiles, were characterised via microscopic analysis. Then the tensile properties of single yarns at different strain rates were measured, and results showed that UHMWPE yarns are highly sensitive to strain rate at very low loading rates. Tensile strength as well as longitudinal modulus showed a noticeable increase, whereas failure strain and toughness decreased with the increase of strain rate. However, these properties remained nearly constant in the strain rate range from 0.33 to 400 s⁻¹. Furthermore, projectile impact tests were conducted on single-ply and multi-ply fabric targets under different impact velocities. The energy absorption characteristics, perforation mechanism, and yarn pull-out behaviour were analysed. Finally, finite element models of the fabrics were developed based on the measured geometric parameters and tensile properties of constituent yarns. The models were able to accurately simulate the impact response of the fabrics studied. The insights gained from this investigation will facilitate the effective utilisation of UHMWPE fabrics in armour and other protective applications.

本文对UHMWPE机织物的冲击行为进行了全面的研究，它包括四个部分：织物参数的几何测量、组成纱线的拉伸试验、织物的冲击试验和织物承受冲击载荷的数值模拟。两种面料材质，即由 Spectra ^Ⓡ 1000 纤维制成的平纹织物和由 Dyneema ^Ⓡ制成的 4 线缎纹织物检查了 SK75 纤维。首先，通过显微分析表征织物的几何特征，例如纱线横截面和编织轮廓。然后测量了单纱在不同应变率下的拉伸性能，结果表明 UHMWPE 纱线在非常低的加载率下对应变率高度敏感。拉伸强度和纵向模量显着增加，而破坏应变和韧性随着应变速率的增加而下降。然而，这些特性在 0.33 到 400 s ^-1的应变速率范围内几乎保持不变. 此外，在不同冲击速度下对单层和多层织物目标进行了弹丸冲击试验。分析了能量吸收特性、穿孔机制和纱线拉出行为。最后，基于测量的几何参数和组成纱线的拉伸性能开发了织物的有限元模型。这些模型能够准确地模拟所研究织物的冲击响应。从这项调查中获得的见解将促进 UHMWPE 织物在装甲和其他防护应用中的有效利用。