Dimensional characterization of an elastic tube using the spectrogram and the reassigned spectrogram time-frequency analysis
The dimensional characterization of an elastic tube can be done thanks to its cut-off frequencies of the waves propagating around the tube. In this work, we propose to determine certain geometrical properties of a tube such as the radii radio b/a. The spectrogram and the reassigned spectrogram time-...
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Published in | 2010 4th International Symposium on Communications, Control and Signal Processing (ISCCSP) pp. 1 - 5 |
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Main Authors | , , , |
Format | Conference Proceeding |
Language | English |
Published |
IEEE
01.03.2010
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Subjects | |
Online Access | Get full text |
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Summary: | The dimensional characterization of an elastic tube can be done thanks to its cut-off frequencies of the waves propagating around the tube. In this work, we propose to determine certain geometrical properties of a tube such as the radii radio b/a. The spectrogram and the reassigned spectrogram time-frequency representation of a signal are used in this work to access to the sought parameters. These techniques are applied to the acoustic signals backscattered by a copper tube immersed in water. The time-frequency images of this signal permit to determine the cut-off frequency of the anti-symmetric wave A1. From these frequencies we have determined with precision the radii radio b/a of the tube. |
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ISBN: | 9781424462858 1424462851 |
DOI: | 10.1109/ISCCSP.2010.5463487 |