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  3. Volume 85, no.3, 2024
  4. STUDY OF THE EFFECTIVE RADII OF ULTRASONIC TRANSDUCERS

STUDY OF THE EFFECTIVE RADII OF ULTRASONIC TRANSDUCERS

ISTCMTM.
2024;
Volume 85(3), Number 3
: pp. 10-16
https://doi.org/10.23939/istcmtm2024.03.010
Authors:
  1. Oleksandr Shpak
  2. Dariia Duviriak
1
Lviv Polytechnic National University, DP NDI «Systemа»
2
State Enterprise «Scientific-Research Institute of Metrology of Measurement and Control Systems»

The study on the effective radii of ultrasonic transducers for hydrophone calibration at the National State Primary Standard of the Unit of Ultrasonic Pressure in Water (NDETU AUV-02-2018) is presented and the appropriate method is described. The impact of the effective radius on measurement distance and diffraction loss coefficients is evaluated. The uncertainty calculation of the effective radius measurement of ultrasonic transducers is provided, and its influence on the accuracy of hydrophone calibration is assessed. Considerable attention is given to estimating the measurement distance between the hydrophone and the ultrasonic transducer, which significantly affects the accuracy of hydrophone calibration.

Ultrasonic pressure
Hydrophone
Ultrasonic Transducer
Effective Radius
uncertainty
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