This study presents some soft armour panel design strategies using shear thickening fluid reinforced Kevlar® fabric. The effect of size of silica nano and sub-micron particles on the ballistic performance of soft body armour panels against the small arms ammunition (velocity ∼ 430 ± 15 m/s) has been analysed. Shear thickening fluids (STFs), namely STF-500 and STF-100, were prepared using silica particles of 500 nm and 100 nm sizes, respectively, and dispersing them in polyethylene glycol (PEG) 200. Kevlar® fabrics were impregnated with both the STFs. Multiple layers (20–24) of fabrics were stitched to prepare 13 soft armour panels which were evaluated for back face signature (BFS) against 9 × 19 mm lead core bullet. Soft armour panels comprised of fabrics impregnated with STF-500 yield lower BFS than the respective panels comprised of fabrics impregnated with STF-100. This study also reveals that STF impregnation of Kevlar® fabrics can reduce the BFS by 2.5 mm–2.8 mm while keeping the areal density of the panel same (5 kg/m²). The areal density of soft armour panel can be reduced further by 10% (4.5 kg/m²), while keeping the BFS comparable or lower than that of a STF impregnated homogenous panel, by judiciously placing the STF impregnated fabrics at the rear side while neat fabrics are placed at the strike face of the panel. STF impregnated panels are found to stop the impacting bullet earlier than that by neat panel.

这项研究提出了一些使用剪切增稠液增强的Kevlar®织物的软装甲面板设计策略。分析了二氧化硅纳米和亚微米颗粒尺寸对防弹板抵抗小武器弹药（速度约430±15 m / s）的弹道性能的影响。分别使用500 nm和100 nm尺寸的二氧化硅颗粒制备剪切增稠液（STF-500和STF-100），并将其分散在聚乙二醇（PEG）200中。 STF。将多层织物（20–24）缝合在一起，以制备13个软质防弹板，并针对9×19 mm铅芯子弹评估其背面特征（BFS）。由浸渍有STF-500的织物组成的软质防弹板的BFS低于由浸渍有STF-100的织物组成的相应防弹板。这项研究还表明，对Kevlar®织物进行STF浸渍可以使BFS降低2.5 mm至2.8 mm，同时保持面板的面密度相同（5 kg / m²）。通过适当地将STF浸渍的织物放置在背面，同时保持BFS与STF浸渍的均质板相当或更低，可以使软装甲板的面密度进一步降低10％（4.5 kg / m ²）。整洁的织物放置在面板的正面。发现STF浸渍的面板比整齐的面板更早地阻止了撞击子弹。