@inproceedings{fba955437ed34fd5a10494170744d4ea,
title = "Damage identification of single aluminium plate produced by hypervelocity impact based acoustic emission",
abstract = "In order to ensure the astronauts' safety and spacecraft normal operation, the development of sensing systems to detect impacts on spacecraft has become an important problem for spacecraft design. The numerical simulations of acoustic emission (AE) signals produced by projectile hypervelocity impact on Aluminium plate at normal have been carried out using the SPH (smoothed particle hydrodynamics) technique of AUTODYN hydro-codes in this paper. The results of two dimensional simulations are given. In order to abstract the characteristics of different wave modes, AE signals are divided into lower frequency and higher frequency parts by wavelet time-frequency transform and reconstruction. The results show that the damage condition of the spacecraft can be represented by the amplitudes of the reconstructed impact signals. The patterns of impact damage can be divided into three types according to the ratio of the second to first low peak amplitude of AE reconstructed signals.",
author = "Wugang Liu and Baojun Pang and Zengyao Han",
year = "2010",
language = "英语",
isbn = "9781617823688",
series = "61st International Astronautical Congress 2010, IAC 2010",
pages = "4384--4387",
booktitle = "61st International Astronautical Congress 2010, IAC 2010",
note = "61st International Astronautical Congress 2010, IAC 2010 ; Conference date: 27-09-2010 Through 01-10-2010",
}