Results 101 to 110 of about 474 (141)

Robust water-activated tissue adhesive patch for arterial/heart wound closure after intervention surgery. [PDF]

Nat Commun
Huang Y, Zhu Q, Gu Y, Wang R, Xie C, Zhu Q, Jiang Q, Liang R, Zhang Y, Cai Y, Hong Y, Ouyang H.   +11 more
europepmc   +1 more source

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An equivalent method for predicting acoustic scattering of coated shell using identified viscoelastic parameters of anechoic coating

Applied Acoustics, 2021
Abstract A novel method to identify the viscoelastic parameters of underwater anechoic coating has been proposed in this present study. Based on two sets of measured reflection coefficients, the viscoelastic parameters can be identified by using the combination of finite element method and Newton's iterative method.
Xuefeng Zhao
exaly   +2 more sources

The absorption characteristics of anechoic coating embedding mixed-cavity structure with single or double shell backing

Proceedings of the 2010 Symposium on Piezoelectricity, Acoustic Waves and Device Applications, 2010
Rubber sheets embedding air cavities are wide used as anechoic coatings to reduce the energy of sound waves reflected by underwater structures, with a great military and use benefit to underwater vehicle sound stealth. According to the backing type, it can be divided into two kinds, namely rubber sheets-steel-air and rubber sheets-steel-water-steel-air,
Chao Shang, Ying-Jie Wei
exaly   +2 more sources

Variational autoencoder-based topological optimization of an anechoic coating: An efficient- and neural network-based design

Materials Today Communications, 2022
Zhaoyu Li, Xuefeng Zhao
exaly   +2 more sources

Underwater sound absorption performance of exponential gradient anechoic coating

Modern Physics Letters B, 2022
In this paper, the gradient anechoic coating whose density changes exponentially along direction of thickness is investigated. A numerical model is established by finite element method (FEM) to analyze the underwater sound absorption performance under different density distribution.
Teng-Fei Si, Zhen-Hua Hou, Tian-Ge Li, Zhi-Jun Zhang   +3 more
openaire   +1 more source

Convolutional Neural Network Prediction of Underwater Anechoic Coating: Effect of Material Properties on Absorption Coefficient

Smart Innovation, Systems and Technologies, 2023
Yiping Sun, Meng Tao
exaly   +2 more sources

Sound absorption characteristics of the two-dimensional dual-graded anechoic coating

Japanese Journal of Applied Physics, 2023
Abstract The anechoic coating can be applied to absorb underwater sound waves. To improve the performance of the current anechoic coating, a two-dimensional dual-graded anechoic coating (2D DGAC) which consists of background material, graded solid cores, and graded cavities has been proposed.
Xiuhai Zhang, Bo Li, Zhaoyong Mao, Xiangyang Zeng   +3 more
openaire   +1 more source

Particle-loaded composites for acoustic anechoic coatings

Journal of Sound and Vibration, 1995
Summary: We consider here composite coating layers to be used as ''acoustic absorbers'' which are able to attenuate broad-banded acoustic signals and minimize reflection. In order to effectively attenuate the acoustic wave, a loaded composite coating layer is designed with a binder material and loading configuration combination that allows both ...
Hinders, M. K., Rhodes, B. A., Fang, T. M.   +2 more
openaire   +2 more sources

Sound absorption of a rib-stiffened plate covered by anechoic coatings

The Journal of the Acoustical Society of America, 2015
Underwater vehicles are often equipped with anechoic coatings to absorb the sound waves of active sonar and attenuate the noise emitted from the vessels. Rubber layers with periodically distributed air cavities are widely used as anechoic coatings.
Xinyi, Fu, Zhongkun, Jin, Yao, Yin, Bilong, Liu   +3 more
openaire   +2 more sources