Abstract
In order to obtain the Hugoniot relation of unreacted JB-9014 explosive, one-dimensional plane impact experiments of the JB-9014 explosive were completed on a gun by using the reverse-impact method. The JB-9014 explosive sample was mounted on the front surface of the sabot as a flyer. The LiF window was taken as a device target. The sabot was accelerated to a certain speed by the gun and then the explosive sample impacted the LiF window. The impact velocity of the flyer and the particle velocity at the sample/window interface were measured by a photonic Doppler velocimetry (PDV). The Hugoniot data was obtained according to the conservation of the shock. The Hugoniot relationship of the JB-9014 explosive sample within the pressure range of 3.1−8.2 GPa was established by using the least square method. The results show that reverse-impact method has the characteristics of high accuracy and fast response time (＜5 ns). In addition, the reverse-impact method can be used to detect the reaction degree of the JB-9014 explosive, which can be applied to judge whether the real Hugoniot data of the unreacted explosive is measured in the experiment.
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