The Study on Broad Directivity Characteristic of Piston Transducer with Finite Baffle

Lei Qin; Chuan Xin Gu; Li Kun Wang; Chao Zhong; Jing Jing Liu; Bin Zhang; Dan Long

doi:10.4028/www.scientific.net/AMM.670-671.1233

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HomeApplied Mechanics and MaterialsApplied Mechanics and Materials Vols. 670-671The Study on Broad Directivity Characteristic of...

The Study on Broad Directivity Characteristic of Piston Transducer with Finite Baffle

Abstract:

Transducer with large directivity and high transmitting sensitivity is designed and fabricated. It is a sandwich transducer with composite horn and it has a finite baffle. A novel model considering the dimension of baffle is deduced, the directivity of transducers are calculated under different conditions. The computations of models agree with the experimental data well. The maximum transmitting voltage response level of the sandwich transducer is 143dB (1V/μPa) and the directivity is up to 99°(-3dB) at the resonance frequency of 75.6kHz.