Results 1 to 10 of about 455 (123)
IEEE Access, 2022 Recent studies show that the shape of the internal cavity with periodic distribution has a significant impact on the characteristics of the anechoic coating. In this study, we proposed a genetic algorithm-based method for optimizing the design parameters
Lei Fu, Ming Yang, Meng Tao
exaly +4 more sources
Journal of Marine Science and EngineeringThe anechoic coating capable of absorbing sound energy in low frequencies within broadband is essential to conceal underwater vehicles. However, the geometric deformation and modification of mechanical parameters under hydrostatic pressure affect the ...
Xiao Pan, Yabin Jin, Jin Yabin
exaly +4 more sources
Research on sound absorption characteristics of Alberich anechoic coatings in debonding states [PDF]
MATEC Web of Conferences, 2019 Viscoelastic structures with periodic cavity arrangement occupy an important position in acoustic stealth. Most studies focus on the absorption at low frequency, under large pressure and in a wide frequency band, however, the sound absorption properties ...
Zhao Xianwen +3 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
Absorption characteristics of multi-layered material anechoic coating on frustum-of-a-cone cavities [PDF]
MATEC Web of Conferences, 2016 Improve the low-frequency acoustic performance of sound absorption coating of submarine is a hot issue. Based on the theory of sound wave normally impinging on the absorption layer of 2D,the 2D shaft mode of frustum-of-a-cone cavities is established by ...
Liu Guo-qiang, Lou Jing-jun, Li Hai-tao
doaj +2 more sources
Results in Physics, 2021 Considering the influence of hydrostatic pressure on geometric parameters of a lining, this paper first proposes a complete global four-terminal acoustic theoretical prediction method based on phenomenological theory for a semi-active composite coating ...
Zhifu Zhang, Shande Li, Jiaxuan Wang
exaly +3 more sources
Direction-Finding Study of a 1.7 mm Diameter Towed Hydrophone Array Based on UWFBG [PDF]
SensorsThis paper investigates a 1.7 mm diameter ultra-weak fiber Bragg grating (UWFBG) hydrophone towed array cable for acoustic direction finding. The mechanism of the underwater acoustic waves received by this integrated-coating sensitizing optical cable is ...
Su Wu +4 more
doaj +2 more sources
Development of a Simple Setup to Measure Shielding Effectiveness at Microwave Frequencies [PDF]
SensorsTesting the shielding effectiveness of materials is a key step for many applications, from the industrial to the biomedical field. This task is very relevant for high-sensitivity sensors, whose performance can be greatly affected by electromagnetic ...
Emanuele Cardillo +6 more
doaj +2 more sources
Results in Physics, 2021 In response to the shortcomings of existing studies on the sound-absorbing characteristics of an anechoic coating, which most ignore the frequency factor and are expensive for temperature-tunable hydroacoustic experiments, a novel semi-analytical ...
Zhifu Zhang +2 more
exaly +3 more sources
Residue-free acoustofluidic manipulation of microparticles via removal of microchannel anechoic corner [PDF]
Ultrasonics Sonochemistry, 2022 Surface acoustic wave (SAW)-based acoustofluidics has shown significant promise to manipulate micro/nanoscale objects for biomedical applications, e.g. cell separation, enrichment, and sorting.
Muhammad Soban Khan +3 more
doaj +2 more sources