【摘要】 使用基于微秒时间尺度上毫克级含能材料的激光诱导空气冲击波爆轰性能测试方法——The Laser-induced Air Shock from Energetic Materials （LASEM），结合脉冲激光系统和高速纹影研究了不同粒径以及不同堆积密度对六硝基六氮杂异戊兹烷（CL-20）、奥克托金（HMX）、黑索今（RDX）、1,1-二氨基-2,2-二硝基乙烯（FOX-7）和2,6-二氨基-3,5-二硝基吡嗪-1-氧化物（LLM105）这5种含能材料冲击波特征速度的影响。结果表明，粒径小于75μm时，测量结果偏差较大；粒径在75～500μm之间时，测量结果波动性较弱，且与爆压值的排列顺序一致，能够作为参考数据评估实际的爆轰性能。堆积密度小于0.7 g·cm^-3时，测量结果波动范围较大；堆积密度在0.7～1.35 g·cm^-3之间时，测量结果较为平稳，且与爆压值的排列顺序一致，测量值更具参考价值。更多还原

【Abstract】 The Laser-induced Air Shock from Energetic Materials（LASEM）, a laser-induced air shock performance test method based on milligram-scale energetic materials on microsecond time scales, was combined with a pulsed laser system and high-speed ripple shadowing. The effects of different particle sizes and different stacking densities on the characteristic velocities of shock waves from five energetic materials（CL-20, HMX, RDX, FOX-7, LLM105） were investigated. The results show that when the particle size is less than 75 μm, the measurement results deviation is large. When the particle size is in the range of 75-500 μm, the measurement results are less volatile and consistent with the order of the burst pressure value, which can be used as reference data to assess the actual burst performance. When the bulk density is less than 0.7 g·cm^-3, the measurement results fluctuate in a wide range. When the bulk density is in the range of 0.7-1.35 g·cm^-3, the measurement results are more stable and consistent with the order of the burst pressure value, and thus the measurement value is more valuable.更多还原