Application of Infrared Thermography on the Measurement of the Focal Plane of a Focused Transducer

ZHAO Wei; CAO Huiyuan; WU Yanqi; TAO Jie; YU Yaping

doi:10.12338/j.issn.2096-9015.2023.0280

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ZHAO Wei, CAO Huiyuan, WU Yanqi, TAO Jie, YU Yaping. Application of Infrared Thermography on the Measurement of the Focal Plane of a Focused Transducer[J]. Metrology Science and Technology. doi: 10.12338/j.issn.2096-9015.2023.0280

Citation:

ZHAO Wei, CAO Huiyuan, WU Yanqi, TAO Jie, YU Yaping. Application of Infrared Thermography on the Measurement of the Focal Plane of a Focused Transducer[J]. Metrology Science and Technology. doi: 10.12338/j.issn.2096-9015.2023.0280

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Application of Infrared Thermography on the Measurement of the Focal Plane of a Focused Transducer

doi: 10.12338/j.issn.2096-9015.2023.0280

College of Metrology & Measurement Engineering , China Jiliang University, Hangzhou 310018, China

Received Date: 2023-11-16
Accepted Date: 2024-05-06
Rev Recd Date: 2024-04-08

Available Online: 2024-07-22

Abstract

Abstract

In order to better study the acoustic field characteristics of focused ultrasound transducers, this paper proposes a method for measuring the focal domain size of focused transducers using infrared thermal imaging technology. The focal size is determined by placing a thin film type sound-absorbing material on the focal plane of the transducer and measuring the temperature distribution on the focal plane under ultrasound power using an infrared thermal imager. This article simultaneously used the hydrophone scanning method to measure the same focusing transducer, and conducted a theoretical analysis of the sound field distribution of the focusing transducer. The results showed that the inconsistency of the -6dB beam width was within 5%, verifying the feasibility of using infrared thermal imaging technology to measure the sound field distribution of the focusing ultrasonic transducer.
- metrology,
- focused ultrasound,
- infrared thermal imaging,
- acoustic thermal model,
- hydrophone,
- sound field measurement

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References(25)

References

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