The Time Sequence Characteristics of AE Source Induced by Debris Cloud

Orbital debris penetrating the shield panel would create secondary debris cloud. The latter shall impact the module wall and will create a mount of punctuate AE source. By introducing the Corvonato debris cloud model, the impact sequence of the particles and the propagation characteristics of the signals emitted by punctuate AE source have been analyzed. A concept of most fast point was presented for representing debris cloud AE source; then based on the wave velocity of the module wall, on the relative position of the impact center and on the fastest point and sensor, a concept of fastest ring was proposed. The conclusion of this paper has important significance in study of the method for locating acoustic emission source induced by secondary debris cloud.