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Evaluation of magnetorheological fluid augmented fabric as a fragment barrier material

机译：磁流变流体增强织物作为碎片阻隔材料的评估

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The augmentation of high strength fabrics with non-Newtonian fluids has been suggested as a means for improving the ballistic performance of fragment barrier materials widely used in fan blade containment, body armor, orbital debris shielding, and other applications. Magnetorheological (MR) fluids have attracted particular interest, in view of their controllability and proven effectiveness in a variety of damping applications. In a basic research investigation of the MR fluid augmented fabric barrier concept, the authors have fabricated MR fluid saturated Kevlar targets and measured the ballistic performance of these targets both with and without an applied magnetic field. The experimental results show that magnetization of the MR fluid does, when considered in isolation, improve the ability of the augmented fabric to absorb impact energy. However, the benefits of plastic and viscous energy dissipation in the magnetized semi-solid are more than offset by the detrimental effects of yarn lubrication associated with the fluids hydrocarbon carrier. An analytical model developed to assist in the interpretation of the experimental data suggests that frictional interaction of the yarns is significantly more effective than magnetorheological augmentation of the fabric in distributing projectile loads away from the point of impact.
机译：已经提出用非牛顿流体来增强高强度织物，作为改善碎片阻隔材料的弹道性能的手段，该碎片阻隔材料广泛用于风扇叶片密封，防弹衣，轨道碎片防护和其他应用中。鉴于磁流变（MR）流体的可控性和在各种阻尼应用中已证明的有效性，引起了人们的特别关注。在对MR流体增强织物屏障概念的基础研究中，作者制造了MR流体饱和的Kevlar靶，并测量了有无磁场时这些靶的弹道性能。实验结果表明，如果单独考虑MR流体的磁化确实可以提高增强织物吸收冲击能量的能力。然而，被磁化的半固体中塑性和粘性能量耗散的好处被与流体烃载体相关的纱线润滑的不利影响所抵消。为帮助解释实验数据而开发的分析模型表明，纱线的摩擦相互作用比织物的磁流变增强在将弹丸载荷分配到冲击点以外的地方要有效得多。

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