2025_programme: The Effect of Temperature on Acoustic Transducer Sensitivity and Transmitting Response
- Day: June 17, Tuesday
Location / Time: A. TERPSIHORI at 11:40-12:00
- Last minutes changes: -
- Session: 20. Underwater acoustic calibration, measurement, and standards
Organiser(s): Stephen Robinson
Chairperson(s): Stephen Robinson, Will Slater
- Lecture: The Effect of Temperature on Acoustic Transducer Sensitivity and Transmitting Response
Paper ID: 2244
Author(s): Caitlin Kean, William Slater
Presenter: Caitlin Kean
Abstract: This study examines the effect of temperature on the receiving sensitivity and transmitting response of several underwater acoustic transducers and hydrophones: the Underwater Sound Reference Division (USRD) Type F30, F42A/C/D, H48, H52, and H56. The data were collected at the USRD over a five-year period, covering a frequency range of 1 Hz to 250 kHz for receiving sensitivity and 1 kHz to 250 kHz for transmitting response for temperatures between 3°C and 35°C. The results reveal a notable inverse relationship between temperature and sensitivity below 1 kHz. For hydrophones with a preamplifier, the extent of the inverse correlation varies considerably at low frequencies where the preamplifier gain decays. Above 1 kHz the relationship is irregular, alternating between regions of no clear relationship, inverse relationship, and highly nonlinear relationship. The differences in sensitivity and transmitting response due to temperature follow similar trends. The findings of this study highlight the importance of calibrating transducers at the temperature they will be used for best accuracy. When temperature-matched calibration data is not available, the findings suggest extra uncertainty is present beyond that reported in calibration certificates.
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This paper is a candidate for the "Prof. John Papadakis award for the best paper presented by a young acoustician(under 40)"
- Corresponding author: Ms Caitlin Kean
Affiliation: USRD/NUWC
Country: United States
