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

Sensors

Roberto Longo¹  Steve Vanlanduit¹  Galid Arroud¹  Patrick Guillaume¹ 

[1] Vrije Universiteit Brussel, 1050 Brussels, Belgium; E-Mails:

关键词: underwater ultrasonic;    scanning laser Doppler vibrometer;    focused transducers;   

DOI  :  10.3390/s150819925

来源: mdpi

【 摘 要 】

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.

【 授权许可】

CC BY   
© 2015 by the authors; licensee MDPI, Basel, Switzerland.