Creating a Reference Plane Ultrasonic Wave in a Fluid Using a Plane Piezoelectric Transducer with a Large Wave Dimension

The article discusses the possibility of using a plane piezoelectric transducer with a large wave dimension as the source of a reference plane ultrasonic wave, which can be used to calibrate hydrophones in the megahertz frequency range. In the experiment, the source was a piezoceramic disk with a di...

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Bibliographic Details
Published in:Acoustical physics 2020-09, Vol.66 (5), p.449-460
Main Authors: Krokhmal, A. A., Nikolaev, D. A., Tsysar, S. A., Sapozhnikov, O. A.
Format: Article
Language:English
Subjects:
Acoustic emission testing
Acoustics
Classical Problems of Linear Acoustics and Wave Theory
Diameters
Electrical impedance
Frequency ranges
Hydrophones
Physics
Physics and Astronomy
Piezoelectric transducers
Plane waves
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Summary:The article discusses the possibility of using a plane piezoelectric transducer with a large wave dimension as the source of a reference plane ultrasonic wave, which can be used to calibrate hydrophones in the megahertz frequency range. In the experiment, the source was a piezoceramic disk with a diameter of 100 mm and a thickness resonance frequency of about 1 MHz. A method was developed for determining the sensitivity of the transducer in the transmit mode by measuring its electrical impedance. A methodology is proposed for finding the parameters of the plane wave component of the emitted acoustic pulse from a known electrical signal on a generator. It is shown that the acoustic pulse profile measured by a calibrated hydrophone near the source agrees well with the theoretically predicted signal.
ISSN:1063-7710
1562-6865
DOI:10.1134/S1063771020050061