Sonar Self-noise and Acoustic Transmission of Acoustic Window Made from Functionally Gradient Materials

IF 1.7 4区物理与天体物理

Acoustics Australia Pub Date : 2022-12-05 DOI:10.1007/s40857-022-00283-4

Fulin Zhou, Bing Li, Zilong Peng, Jun Fan, Bin Wang

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Abstract

The sonar self-noise characteristics of an acoustic window made from multilayer functionally gradient materials (FGMs) under external turbulent pulsating pressure excitation were theoretically modeled using the multilayer plate (MLP) transfer function method and the turbulent pulsating pressure wavenumber–frequency spectrum. An MLP transfer matrix was used to determine acoustic transmission loss of the multilayer FGM plate under plane wave excitation. The theoretical model was verified by the finite element method. The FGM was fabricated from rubber and fiberglass-reinforced plastics (FRP)/carbon fiber. The acoustical transmission loss of the multilayer FGM plate and noise reduction patterns of the multilayer FGM acoustic windows were assessed at different gradients. The acoustic effect of the window on external sound waves and its spatial filtering effect on external turbulent fluctuation excitations can be adjusted by regulating the proportions of rubber and FRP, which changes the gradient variation pattern.

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声纳自噪声与功能梯度材料声窗的声传输

采用多层板传递函数法和湍流脉动压力波数-频谱法，对外部湍流脉动压力激励下多层功能梯度材料声窗的声呐自噪声特性进行了理论建模。采用MLP传递矩阵计算平面波激励下多层FGM板的声传输损失。用有限元法对理论模型进行了验证。FGM由橡胶和玻璃纤维增强塑料(FRP)/碳纤维制成。在不同梯度下，对多层女性生殖器切割板的声传输损失和多层女性生殖器切割声窗的降噪模式进行了评价。窗口对外界声波的声学效应及其对外界湍流波动激励的空间过滤效应可以通过调节橡胶和FRP的比例来调节，从而改变梯度变化规律。

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来源期刊

Acoustics Australia ACOUSTICS-

自引率

5.90%

发文量

期刊介绍： Acoustics Australia, the journal of the Australian Acoustical Society, has been publishing high quality research and technical papers in all areas of acoustics since commencement in 1972. The target audience for the journal includes both researchers and practitioners. It aims to publish papers and technical notes that are relevant to current acoustics and of interest to members of the Society. These include but are not limited to: Architectural and Building Acoustics, Environmental Noise, Underwater Acoustics, Engineering Noise and Vibration Control, Occupational Noise Management, Hearing, Musical Acoustics.