Penetration experiments in aluminum 1100 targets using soda-lime glass projectiles
Penetration experiments in aluminum 1100 targets using soda-lime glass projectiles
复制标题
使用钠钙玻璃弹对铝 1100 靶材进行侵彻实验
DOI：
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发表时间：
1995
期刊：
影响因子：
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通讯作者：
J. L. Winkler
中科院分区：
文献类型：
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作者：
F. Hörz;M. Cintala;R. P. Bernhard;F. Cardenas;W. E. Davidson;Gerald Haynes;T. See;J. L. Winkler
采用直径3.2 mm的钠钙玻璃球形弹丸，以1~7 km/S的速度，对厚度从几厘米到小于1微米的超薄铝箔退火靶的撞击和侵彻行为进行了实验研究，目的是建立初始撞击条件(撞击速度、弹丸直径和靶厚)与所产生的弹坑或侵彻孔直径之间的定量尺寸关系。为了从空间暴露的表面提取超高速粒子的直径和通量，并预测某些碰撞屏蔽的性能，需要这样的尺寸关系和校准实验。铝1100的弹坑行为被很好地预测出来。然而，我们的硅酸盐撞击器的弹坑深度比基于铝弹和铝6061-T6靶材的标准值略深。弹道极限厚度也不同。这些差异证明了详细的弹坑几何形状和侵彻行为对目标和撞击器的物理性质都非常敏感。每个侵彻实验都配备了一个目击者板，以监测从目标后部发出的碎片羽流的性质。这股羽流既包括抛射物碎片，也包括目标碎片。侵彻孔喷雾和目标板喷雾图案都随着弹丸直径/靶厚的变化而系统地演变。弹丸和靶丸的相对尺寸完全决定了本报告中的实验产品；撞击速度也是侵彻孔演化的重要因素，但对见证板喷雾模式的影响较小。
The cratering and penetration behavior of annealed aluminum 1100 targets, with thickness varied from several centimeters to ultra-thin foils less than 1 micrometer thick, were experimentally investigated using 3.2 mm diameter spherical soda-lime glass projectiles at velocities from 1 to 7 km/s. The objective was to establish quantitative, dimensional relationships between initial impact conditions (impact velocity, projectile diameter, and target thickness) and the diameter of the resulting crater or penetration hole. Such dimensional relationships and calibration experiments are needed to extract the diameters and fluxes of hypervelocity particles from space-exposed surfaces and to predict the performance of certain collisional shields. The cratering behavior of aluminum 1100 is fairly well predicted. However, crater depth is modestly deeper for our silicate impactors than the canonical value based on aluminum projectiles and aluminum 6061-T6 targets. The ballistic-limit thickness was also different. These differences attest to the great sensitivity of detailed crater geometry and penetration behavior on the physical properties of both the target and impactor. Each penetration experiment was equipped with a witness plate to monitor the nature of the debris plume emanating from the rear of the target. This plume consists of both projectile fragments and target debris. Both penetration hole and witness-plate spray patterns systematically evolve in response to projectile diameter/target thickness. The relative dimensions of the projectile and target totally dominate the experimental products documented in this report; impact velocity is an important contributor as well to the evolution of penetration holes, but is of subordinate significance for the witness-plate spray patterns.