Meta-structure underwater transducer with low-frequency broadband efficient acoustic emission

IF 3.4 2区物理与天体物理 Q1 ACOUSTICS

Applied Acoustics Pub Date : 2025-02-22 DOI:10.1016/j.apacoust.2025.110622

Yunzhong Lei, Jiu Hui Wu, Shaokun Yang, Tengyue Zheng

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引用次数: 0

Abstract

It is difficult for traditional underwater acoustic emission transducers to possess low-frequency, broadband and high-efficiency characteristics simultaneously. In this paper, we propose a novel kind of meta-structure underwater transducer with its cover composed of a circular plate, ribs and additional mass units, and reveal the mechanisms of local resonance efficient acoustic emission and synergistic coupling broadband acoustic emission. The genetic algorithm (GA) is adopted to optimize the parameters of the meta-structure cover, and the low-frequency broadband efficient underwater acoustic emission with the sound pressure level (SPL) fluctuation of 6 dB in 100–2500 Hz is realized. Subsequently, the radial magnetic circuit is used as the driving device, and the prototype of the meta-structure underwater acoustic transducer is developed. The experimental results confirm the acoustic emission performance of the prototype, which is expected to show significant potential in long-range underwater acoustic communication.

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来源期刊

Applied Acoustics 物理-声学

CiteScore

7.40

自引率

11.80%

发文量

618

审稿时长

7.5 months

期刊介绍： Since its launch in 1968, Applied Acoustics has been publishing high quality research papers providing state-of-the-art coverage of research findings for engineers and scientists involved in applications of acoustics in the widest sense. Applied Acoustics looks not only at recent developments in the understanding of acoustics but also at ways of exploiting that understanding. The Journal aims to encourage the exchange of practical experience through publication and in so doing creates a fund of technological information that can be used for solving related problems. The presentation of information in graphical or tabular form is especially encouraged. If a report of a mathematical development is a necessary part of a paper it is important to ensure that it is there only as an integral part of a practical solution to a problem and is supported by data. Applied Acoustics encourages the exchange of practical experience in the following ways: • Complete Papers • Short Technical Notes • Review Articles; and thereby provides a wealth of technological information that can be used to solve related problems. Manuscripts that address all fields of applications of acoustics ranging from medicine and NDT to the environment and buildings are welcome.