A Method of Leak Detection for Spacecraft On-orbit based on Acoustic Emission

DOI

10.2991/itms-15.2015.319How to use a DOI?

Keywords

Acoustic emission; Spacecraft on-orbit; Leak detect; Average frequency spectrum

Abstract

With the development of spaceflight activity of human, the number of space debris has increased dramatically. Spacecraft will be impacted by large amount of small debris in space during flight. In order to detect the gas leak in time, a new method of leak detection for spacecraft on-orbit based on acoustic emission is important. Gas leak detection technology based on the acoustic emission in the field of manned space flight has been successfully applied. In this paper, some of the latest research is introduced giving some reference to leak detection for spacecraft on-orbit. Gas leak produces a large number of acoustic emission signal, and the frequency of the signal covers multiple frequency bands. The smaller the leakage is, the smaller the signal amplitude is, but the more high frequency signal component is contained. In normalized energy distribution map, different aperture leakage acoustic emission signals have a certain similarity, but have obvious difference with pump noise signal whose frequency hand is mainly below 20 kHz.

Copyright

© 2015, the Authors. Published by Atlantis Press.

Open Access

This is an open access article distributed under the CC BY-NC license (http://creativecommons.org/licenses/by-nc/4.0/).

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TY  - CONF
AU  - L. Qi
AU  - D.H. Meng
AU  - R.X. Yan
AU  - L.C. Sun
AU  - Y. Wang
AU  - W. Sun
AU  - R.P. Shao
AU  - W.D. Li
AU  - Z. Li
PY  - 2015/11
DA  - 2015/11
TI  - A Method of Leak Detection for Spacecraft On-orbit based on Acoustic Emission
BT  - Proceedings of the 2015 International Conference on Industrial Technology and Management Science
PB  - Atlantis Press
SP  - 1304
EP  - 1307
SN  - 2352-538X
UR  - https://doi.org/10.2991/itms-15.2015.319
DO  - 10.2991/itms-15.2015.319
ID  - Qi2015/11
ER  -