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Sensors 2015, 15(8), 19925-19936; doi:10.3390/s150819925

Underwater Acoustic Wavefront Visualization by Scanning Laser Doppler Vibrometer for the Characterization of Focused Ultrasonic Transducers

1
Vrije Universiteit Brussel, 1050 Brussels, Belgium
2
ESEO Group–GSII, 49107 Angers, France
3
LUNAM Université, LAUM–CNRS UMR 6613, 72085 Le Mans, France
These authors contributed equally to this work.
*
Author to whom correspondence should be addressed.
Academic Editor: Vittorio M.N. Passaro
Received: 15 June 2015 / Revised: 24 July 2015 / Accepted: 6 August 2015 / Published: 13 August 2015
(This article belongs to the Section Physical Sensors)
View Full-Text   |   Download PDF [340 KB, uploaded 18 August 2015]   |  

Abstract

The analysis of acoustic wave fields is important for a large number of engineering designs, communication and health-related reasons. The visualization of wavefronts gives valuable information about the type of transducers and excitation signals more suitable for the test itself. This article is dedicated to the development of a fast procedure for acoustic fields visualization in underwater conditions, by means of laser Doppler vibrometer measurements. The ultrasonic probe is a focused transducer excited by a chirp signal. The scope of this work is to evaluate experimentally the properties of the sound beam in order to get reliable information about the transducer itself to be used in many kinds of engineering tests and transducer design. View Full-Text
Keywords: underwater ultrasonic; scanning laser Doppler vibrometer; focused transducers underwater ultrasonic; scanning laser Doppler vibrometer; focused transducers
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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MDPI and ACS Style

Longo, R.; Vanlanduit, S.; Arroud, G.; Guillaume, P. Underwater Acoustic Wavefront Visualization by Scanning Laser Doppler Vibrometer for the Characterization of Focused Ultrasonic Transducers. Sensors 2015, 15, 19925-19936.

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