Theoretical study on the acoustic field distribution of a rectangular transducer in attenuated media

Xue-ping Jiang; Tian-bao Zhang; Jing Jia; Yun-fei Yue

doi:10.1117/12.2581299

5 November 2020 Theoretical study on the acoustic field distribution of a rectangular transducer in attenuated media

Xue-ping Jiang, Tian-bao Zhang, Jing Jia, Yun-fei Yue

Proceedings Volume 11568, AOPC 2020: Optics Ultra Precision Manufacturing and Testing; 1156826 (2020) https://doi.org/10.1117/12.2581299
Event: Applied Optics and Photonics China (AOPC 2020), 2020, Beijing, China

Abstract

Rectangular transducer is widely used in industrial non-destructive testing. Current studies generally assume that there is no attenuation in the medium. In this paper, the distribution characteristics of the radiated sound field in attenuation media of a rectangular transducer are theoretically calculated. Firstly, considering the attenuation of the medium, the analytical expression of sound field distribution in The Fresnel region is derived under the condition of Fresnel approximation. Secondly, the distribution characteristics of sound pressure on the beam axis are discussed. Finally, the sound pressure distribution in the far field is calculated using the Fraunhofer approximation and compared with the case without attenuation. This study provides an important reference for the method and process design of using rectangular transducer to detect attenuation materials.

Citation Download Citation

Xue-ping Jiang, Tian-bao Zhang, Jing Jia, and Yun-fei Yue "Theoretical study on the acoustic field distribution of a rectangular transducer in attenuated media", Proc. SPIE 11568, AOPC 2020: Optics Ultra Precision Manufacturing and Testing, 1156826 (5 November 2020); https://doi.org/10.1117/12.2581299

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