Concentration dynamic probe of Micro/Nano aluminum powder

Abstract

The appropriate concentration of Micro/Nano aluminum powder cloud is a precondition of the FAE (fuel air explosive) detonation. In this paper, a pair of ultrasonic transducers was developed to measure Micro/Nano aluminum powder cloud concentration distribution during the disperse of dust in the standard 20L explosion vessel. The high gradients of aluminum powder concentration are established and the experimental results show that Nano aluminum powder particles have better cloud concentration distribution characteristics than micron aluminum powder, which provides experimental data support to improving FAE detonation energy.