<p>This study investigated the influence of aluminum powder content on the detonation characteristics of aluminum-based explosives, which is considered as a typical non-ideal explosives, by examining three different proportions of aluminum powder (10, 20 and 30%). The entire explosive loading process was recorded through high-speed photography, while overpressure and temperature values were measured at various locations in order to calculate the detonation impulse. Additionally, the detonation impulse values were compared with TNT as a baseline. The reactions generated by 10, 20 and 30% aluminum powder content increased by 53.2, 79.5 and 347.8%, respectively, due to the participation of aluminum powder. The results revealed that both the blast impulse and temperature decreased rapidly with increasing distance from the detonation point. The explosive with 20% aluminum powder content exhibited the highest overpressure and temperature values at medium near-field distances (1.3–1.5&#xa0;m). Furthermore, the positive pressure impulses generated by explosives with 20 and 30% aluminum powder content were higher than that of TNT, suggesting enhanced detonation characteristics.</p>

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Influence of aluminum powder content on detonation energy release characteristics of non-ideal explosives

  • Peng Chen,
  • Fei Shen,
  • Xiongwei Zheng,
  • Lingfeng Li

摘要

This study investigated the influence of aluminum powder content on the detonation characteristics of aluminum-based explosives, which is considered as a typical non-ideal explosives, by examining three different proportions of aluminum powder (10, 20 and 30%). The entire explosive loading process was recorded through high-speed photography, while overpressure and temperature values were measured at various locations in order to calculate the detonation impulse. Additionally, the detonation impulse values were compared with TNT as a baseline. The reactions generated by 10, 20 and 30% aluminum powder content increased by 53.2, 79.5 and 347.8%, respectively, due to the participation of aluminum powder. The results revealed that both the blast impulse and temperature decreased rapidly with increasing distance from the detonation point. The explosive with 20% aluminum powder content exhibited the highest overpressure and temperature values at medium near-field distances (1.3–1.5 m). Furthermore, the positive pressure impulses generated by explosives with 20 and 30% aluminum powder content were higher than that of TNT, suggesting enhanced detonation characteristics.