TY - GEN
T1 - Investigation of cavitation bubble influence on frequency spectrum of fiber optic probe hydrophone output
AU - Kimura, Koh
AU - Takeuchi, Sou
AU - Koike, Yoshikazu
N1 - Funding Information:
ACKNOWLEDGMENT We appreciate greatly to Nobby Tech. Ltd. They supported us with greatly high-speed camera measurement. This research is supported by Branding project of Shibaura Institute of Technology.
Publisher Copyright:
© 2020 IEEE.
PY - 2020/9/7
Y1 - 2020/9/7
N2 - Authors consider that a reflection type fiber optic probe hydrophone (FOPH) is suitable for the absolute sound pressure measurement under cavitation at high ultrasonic emission like ultrasonic cleaning machine or sonochemical reactor. The precision of the FOPH at higher sound pressure is almost same as the conventional piezoelectric type hydrophone beyond 100kHz. However, the measurement accuracy of the FOPH below 100kHz becomes lower due to cavitation bubbles. The cavitation bubbles give large refractive index variation at the probe point of FOPH. And, hence, impulse distortion appears in the output signal and the measurement accuracy becomes lower. Therefore, the sound measurement below 100kHz has not been examined fully yet. In this report, distortion components of output wave signal in FOPH under cavitation are examined. Moreover, the component caused by cavitation is found.
AB - Authors consider that a reflection type fiber optic probe hydrophone (FOPH) is suitable for the absolute sound pressure measurement under cavitation at high ultrasonic emission like ultrasonic cleaning machine or sonochemical reactor. The precision of the FOPH at higher sound pressure is almost same as the conventional piezoelectric type hydrophone beyond 100kHz. However, the measurement accuracy of the FOPH below 100kHz becomes lower due to cavitation bubbles. The cavitation bubbles give large refractive index variation at the probe point of FOPH. And, hence, impulse distortion appears in the output signal and the measurement accuracy becomes lower. Therefore, the sound measurement below 100kHz has not been examined fully yet. In this report, distortion components of output wave signal in FOPH under cavitation are examined. Moreover, the component caused by cavitation is found.
KW - Cavitation
KW - Fiber optic probe hydrophone
KW - Harmonics
KW - Hydrophone
KW - Sound pressure measurement
KW - Ultrasonic cleaning
KW - Ultrasonic transducer
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U2 - 10.1109/IUS46767.2020.9251534
DO - 10.1109/IUS46767.2020.9251534
M3 - Conference contribution
AN - SCOPUS:85097871621
T3 - IEEE International Ultrasonics Symposium, IUS
BT - IUS 2020 - International Ultrasonics Symposium, Proceedings
PB - IEEE Computer Society
T2 - 2020 IEEE International Ultrasonics Symposium, IUS 2020
Y2 - 7 September 2020 through 11 September 2020
ER -