Algorithms for Ultrasonic Spacecraft Leak Location Using Structure Borne Noise

Date
2004-07-01
Authors
Holland, Stephen
Roberts, Ronald
Chimenti, Dale
Strei, Michael
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Research Projects
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Aerospace Engineering
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Abstract

Micrometeorite induced air leaks pose a substantial danger to manned spacecraft. An algorithm for identifying and locating air leaks in spacecraft by monitoring cross‐correlations of leak‐generated guided ultrasonic waves in the spacecraft’s plate‐like skin using a minimal array of sensors is described, The algorithm utilizes a‐priori knowledge of guided‐mode dispersion to invert that dispersion and thereby identify possible location curves for the leak source. The intersection of curves from multiple correlations identifies a specific location for the leak source.

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Copyright 2005 American Institute of Physics. This article may be downloaded for personal use only. Any other use requires prior permission of the author and the American Institute of Physics.

This article appeared in AIP Conference Proceedings, 760 (2005): 1107–1112 and may be found at http://dx.doi.org/10.1063/1.1916796.

Keywords
ultrasonic materials testing, leak detection, space vehicles, nondestructive testing, nondestructive evaluation
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