Abstract
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.
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Funding
The research was supported by the Russian Science Foundation (grant no. 19-12-00148). A.A. Krokhmal’s work was supported by the BASIS Foundation for the Development of Theoretical Physics and Mathematics.
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Krokhmal, A.A., Nikolaev, D.A., Tsysar, S.A. et al. Creating a Reference Plane Ultrasonic Wave in a Fluid Using a Plane Piezoelectric Transducer with a Large Wave Dimension. Acoust. Phys. 66, 449–460 (2020). https://doi.org/10.1134/S1063771020050061
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DOI: https://doi.org/10.1134/S1063771020050061