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19 November 2021 Discussion on ultrasonic optical method and verification of the influence of pellicle placed on water surface on sound field
Chu Gao, Shen-ping Gao, Lei Yao, Hui-feng Zheng, De-lin Wu, Xiao-bo Wang
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Proceedings Volume 12059, Tenth International Symposium on Precision Mechanical Measurements; 120591T (2021) https://doi.org/10.1117/12.2615088
Event: Tenth International Symposium on Precision Mechanical Measurements, 2021, Qingdao, China
Abstract
Compared with the traditional hydrophone method, the optical method has the advantages of high precision and high measurement speed. In this paper, a variety of optical detection methods of sound field are introduced. Taking optical interferometry as an example, the velocity of acoustic particles in sound field is measured by measuring the vibration of pellicle with laser vibrometer. Acoustic reflective pellicle is the key medium, and its main installation methods are placed in water and on water. The hydrophone method is used to explore the effect of sound transmitting and reflective pellicle placed in water on the performance of ultrasonic sound field. The experimental results show that the existence of surface sound transmitting pellicle has no effect on the ultrasonic sound field of focused transducer.
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Chu Gao, Shen-ping Gao, Lei Yao, Hui-feng Zheng, De-lin Wu, and Xiao-bo Wang "Discussion on ultrasonic optical method and verification of the influence of pellicle placed on water surface on sound field", Proc. SPIE 12059, Tenth International Symposium on Precision Mechanical Measurements, 120591T (19 November 2021); https://doi.org/10.1117/12.2615088
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KEYWORDS
Ultrasonics
Acoustics
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