Compared with traditional jets, energetic jets have more efficient damage effects. To study the reaction characteristics of polytetrafluoroethylene- (PTFE-) based energetic jets under impact loading, the static mechanical properties of Al/PTFE/W composite energetic materials are studied by using a universal testing machine at a strain rate of 0.01 s⁻¹, and the dynamic mechanical properties are tested on a slip Hopkinson pressure bar (SHPB) system at a strain rate of 1000∼5500 s⁻¹. A dynamic energy acquisition system is established to quantify the energy generated by the response of the Al/PTFE/W energetic jets to impact targets. The effects of the material proportion and impact energy on the mechanical and energy release properties of the Al/PTFE/W energetic jets are analyzed. The results show that the Al/PTFE/W composite has an obvious strain rate effect. As the content in the composite increases, the yield strength and compressive strength of the material increase gradually, but the strain at break decreases. When the content is 45%, the peak pressure, total release energy, pressure platform duration, and total pressure duration of the Al/PTFE/W energetic jets are the highest. As the impact energy increases, the pressure peak and energy release values of the energetic jets increase. At an impact energy threshold of 106.1 MJ/m², the chemical reaction of the Al/PTFE/W (45%) energetic jets is saturated. The results provide a theoretical and experimental basis for the application of energetic jets.

中文翻译：

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Al / PTFE / W高能射流冲击能释放特性的研究

与传统喷气机相比，高能喷气机具有更有效的破坏效果。为了研究基于聚四氟乙烯-（PTFE-）的高能射流在冲击载荷下的反应特性，使用通用测试机在0.01 s ^-1的应变速率下研究了Al / PTFE / W复合高能材料的静态力学性能，并在滑动霍普金森压力棒（SHPB）系统上以1000〜5500 s ^-1的应变速率测试动态力学性能。。建立了动态​​能量采集系统，以量化Al / PTFE / W高能射流对撞击目标的响应所产生的能量。分析了材料比例和冲击能对Al / PTFE / W高能射流的机械性能和能量释放性能的影响。结果表明，Al / PTFE / W复合材料具有明显的应变速率效应。随着复合材料含量的增加，材料的屈服强度和抗压强度逐渐增加，但断裂应变降低。当。。。的时候含量为45％时，Al / PTFE / W高能射流的峰值压力，总释放能量，压力平台持续时间和总压力持续时间最高。随着冲击能量的增加，高能射流的压力峰值和能量释放值会增加。在106.1 MJ / m ²的冲击能量阈值下，Al / PTFE / W（45％）高能射流的化学反应饱和。研究结果为高能射流的应用提供了理论和实验依据。