Investigation of cavitation bubble influence on frequency spectrum of fiber optic probe hydrophone output

Koh Kimura, Sou Takeuchi, Yoshikazu Koike

研究成果: Conference contribution

抄録

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.

本文言語English
ホスト出版物のタイトルIUS 2020 - International Ultrasonics Symposium, Proceedings
出版社IEEE Computer Society
ISBN(電子版)9781728154480
DOI
出版ステータスPublished - 2020 9 7
イベント2020 IEEE International Ultrasonics Symposium, IUS 2020 - Las Vegas, United States
継続期間: 2020 9 72020 9 11

出版物シリーズ

名前IEEE International Ultrasonics Symposium, IUS
2020-September
ISSN(印刷版)1948-5719
ISSN(電子版)1948-5727

Conference

Conference2020 IEEE International Ultrasonics Symposium, IUS 2020
国/地域United States
CityLas Vegas
Period20/9/720/9/11

ASJC Scopus subject areas

  • 音響学および超音波学

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