Results 11 to 20 of about 1,300 (175)
All‐in‐One Underwater Quality Evaluation Metamaterial With Mechanical Robustness, Sound Attenuation, and Diffuse Reflection [PDF]
Advanced ScienceTo resolve acoustic‐mechanical conflicts and integrate research gaps in underwater coatings. Inspired by the biomechanics of jumping spiders and human bones, we design an underwater composite structure subject to hydrostatic pressure. Based on mechanisms
Hongze Li +8 more
doaj +2 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 ReportsAnechoic 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 +4 more
doaj +2 more sources
An efficient approach for broadband sound absorption using periodic multi-layer solid inclusions in acoustic coatings. [PDF]
PLoS ONEAnechoic 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 +4 more
doaj +2 more sources
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 +17 more
doaj +1 more source
Journal of Marine Science and Engineering, 2023 The acoustic absorption characteristics of anechoic coatings attached to the surface of underwater vehicles are closely related to their acoustic stealth.
Kangkang Shi +4 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
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 +2 more
doaj +1 more source
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 +3 more
doaj +1 more source
Zhongguo Jianchuan Yanjiu, 2022 ObjectivesAn underwater anechoic coating layer laid on the hull surface of a submarine is squeezed under the action of high hydrostatic pressure, changing its shape and material parameters, which has a great impact on sound absorption performance ...
Wenkai DONG, Meixia CHEN
doaj +1 more source