Results 21 to 30 of about 1,533 (215)

Optimized ultrathin hybrid sound absorption metasurfaces with preserved hydrostatic pressure-resistant

Materials & Design
High-efficiency waterborne sound absorption with a high hydrostatic pressure resistance is a crucial ability for underwater noise-control engineering. Herein, driven by artificial neural network (ANN), a desirable design method is proposed to construct ...
Jiaming Feng, Qingxuan Liang, Xin Yan, Dichen Li   +3 more
doaj   +2 more sources

Rayleigh beam underwater metamaterial for low-frequency and broadband sound absorption

Materials Today Communications, 2023
Low -frequency and broadband underwater sound absorption has always been a primary industrial concern. Based on the coupling effect of Rayleigh beam vibration and Fabry-Perot resonance, a broadband underwater sound -absorbing metamaterial is proposed and
Yu Liu, Boya Xiao, Kaiqi Yan, Jinju Liu, Meng Chen, Heng Jiang, Yuren Wang   +6 more
core   +3 more sources

Inverse design of periodic cavities in anechoic coatings with gradient changes of radii and distances via a conditional generative adversarial network [PDF]

Scientific Reports
Anechoic coatings are usually applied to underwater targets, such as submarine shells, to reduce the detection distance of enemy active sonar. The main challenge is obtaining low-frequency and broadband sound absorption characteristics through the design
Yiping Sun, Jin Fu, Yuzhong Wu, Jiadui Chen, Meng Tao   +4 more
doaj   +2 more sources

Broadband Low-Frequency Sound Absorption Enabled by a Rubber-Based Ni₅₀Ti₅₀ Alloy Multilayer Acoustic Coating

Journal of Marine Science and Engineering
Acoustic coatings play a vital role in enhancing the acoustic stealth of underwater structures across the full depth range and, especially, in the low-frequency band.
Yizhe Huang, Ziyi Liu, Qiyuan Fan, Huizhen Zhang, Bin Huang, Qibai Huang, Zhifu Zhang   +6 more
doaj   +2 more sources

An efficient approach for broadband sound absorption using periodic multi-layer solid inclusions in acoustic coatings. [PDF]

PLoS ONE
Anechoic coatings are of significance for enhancing the acoustic stealth of underwater equipment. Acoustic coatings with multi-layers of periodic solid inclusions are proposed and investigated for broadband sound absorption. Firstly, an analysis model is
Xiaogang Li, Peng Liu, Xilong Zhang, Xiaoyang Zhu, Hongbo Zhang   +4 more
doaj   +2 more sources

A Composite Perforated Partitioned Sandwich Panel With Corrugation for Underwater Low-Frequency Sound Absorption

Frontiers in Mechanical Engineering, 2021
Underwater acoustic wave absorption and control play an important role in underwater applications. Various types of underwater acoustic metamaterials have been proposed in recent years with the vigorous development of acoustic metamaterials.
Junyi Wang, Jiaming Hu, Yun Chen
doaj   +1 more source

A review of underwater acoustic metamaterials for underwater acoustic equipment

Frontiers in Physics, 2022
Researchers use underwater acoustic equipment to explore the unknown ocean environment, which is one of the important means to understand and utilize the ocean.
Zhenjing Zhu, Zhenjing Zhu, Ning Hu, Ning Hu, Junyi Wu, Wenxin Li, Wenxin Li, Jiabao Zhao, Jiabao Zhao, Maofa Wang, Maofa Wang, Maofa Wang, Fanzong Zeng, Fanzong Zeng, Huajie Dai, Huajie Dai, Yongju Zheng, Yongju Zheng   +17 more
doaj   +1 more source

Ultrathin acoustic metamaterial as super absorber for broadband low-frequency underwater sound

Scientific Reports, 2023
In this work, an ultrathin acoustic metamaterial formed by space-coiled water channels with a rubber coating is proposed for underwater sound absorption. The proposed metamaterial achieves perfect sound absorption ( $$\alpha$$ α  > 0.99) at 181 Hz, which
Xindong Zhou, Xiaochen Wang, Fengxian Xin   +2 more
doaj   +1 more source

Review of underwater sound absorption materials

IOP Conference Series: Earth and Environmental Science, 2020
Abstract Underwater sound absorption is becoming more and more important for underwater military equipment. Underwater acoustic stealth technology is constantly developing, we have conducted a research, summary and classification of underwater sound stealth materials.
Jianzhu Dong, Pengyu Tian
openaire   +1 more source

Deep subwavelength hybrid metamaterial for low-frequency underwater sound absorption by quasi-Helmholtz resonance

AIP Advances, 2023
We proposed an acoustic metamaterial with deep subwavelength thickness for low-frequency underwater sound absorption. The proposed hybrid metamaterial has a perforated facesheet, a fluid-filled square honeycomb core with inside rubber coating, and a ...
Mingyu Duan, Chenlei Yu, Fengxian Xin, Tian Jian Lu   +3 more
doaj   +1 more source