Energy Output Characteristics and Evaluation Method of Poly-Black Aluminum Explosive

In order to study the energy output characteristics of the RDX-based aluminum explosive (JHL-X) and its energy level evaluation method, the explosion heat value and underwater explosion of JHL-X were tested through adiabatic calorimeter, underwater explosion system, and air blast system. Energy, ground overpressure. The results show that the explosion heat value of JHL-X in vacuum is basically the same as that in N₂, about is 1.75 times TNT equivalent; the explosion heat value in air is 8045.724 J/g, 1.93 times TNT equivalent, which is 10% higher than vacuum and N₂. The shock wave energy and bubble energy of JHL-X in an underwater explosion are 0.935 and 4.614 kJ/g, and the total energy is 1.83 times TNT equivalent. In an air blast, the TNT and JHL-X overpressure formulas derived from ground overpressure show that the TNT equivalents at 1.5, 2.0, and 2.5 m are 2.14, 1.70, and 1.75 times, respectively, and the average value is 1.86 times. In addition, the underwater explosion and the explosion heat in vacuum are not provided with oxygen from the external environment, so that the two experiment methods maintain consistency when evaluating the energy level of JHL-X explosives. The air blast and explosion heat in the air have oxygen supply from the external environment, which causes reaction of Al in the aluminum-containing explosive to increase, so the total energy increased, results of these two experiments are similar. Therefore, when evaluating the energy level of explosives, it is necessary to consider the explosive formulation design and practical use, then select different evaluation methods.