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An Improved Method for Measuring Acoustic Attenuation in Viscoelastic Solid Media [PDF]

Micromachines
Accurate measurement of attenuation during acoustic wave propagation in viscoelastic solid media is of theoretical and practical significance. Conventional studies primarily rely on analogies to models of electromagnetic wave attenuation in non-ideal ...
Lin Fa, Jinyue Li, Huiting Yang, Yulin Xu, Hongyi Zhu, Xiangrong Fang, Xiao Zou, Ning Shen, Meishan Zhao   +8 more
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Estimation of attenuation of wireless links in various environmental conditions [PDF]

Biuletyn Wojskowej Akademii Technicznej, 2023
The article is devoted to the assessment of attenuation in wireless links in various environmentalconditions. A simplified damping estimation methodology based on the Floating-intercept (FI) modelis presented [1].
Tomasz Grasza
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Investigation of the Physical Mechanism of Acoustic Attenuation in Viscous Isotropic Solids

Micromachines, 2022
The traditional acoustic attenuation coefficient is derived from an analogy of the attenuation of an electromagnetic wave propagating inside a non-ideal medium, featuring only the attenuation of wave propagation. Nonetheless, the particles inside viscous
Lin Fa, Lili Li, Hong Gong, Wenhui Chen, Jing Jiang, Guoqiang You, Jifeng Liang, Yandong Zhang, Meishan Zhao   +8 more
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Characterizing Pulse Attenuation of Intra-Cloud and Cloud-to-Ground Lightning with E-Field Signal Measured at Multiple Stations

Remote Sensing, 2022
In this paper, we analyze the waveform data of nearly 200,000 intra-cloud (IC) and cloud-to-ground (CG) lightning discharges detected by the Jianghuai Area Sferic Array on 26–29 August 2019 to investigate the propagation features of lightning ...
Wenwei Wang, Baoyou Zhu
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Atmospheric Propagation Modelling for Terrestrial Radio Frequency Communication Links in a Tropical Wet and Dry Savanna Climate

Information, 2022
Atmospheric impairment-induced attenuation is the prominent source of signal degradation in radio wave communication channels. The computation-based modeling of radio wave attenuation over the atmosphere is the stepwise application of relevant radio ...
Joseph Isabona, Agbotiname Lucky Imoize, Stephen Ojo, Cheng-Chi Lee, Chun-Ta Li   +4 more
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The Effect of Attenuation from Fish on Passive Detection of Sound Sources in Ocean Waveguide Environments

Remote Sensing, 2021
Attenuation from fish can reduce the intensity of acoustic signals and significantly decrease detection range for long-range passive sensing of manmade vehicles, geophysical phenomena, and vocalizing marine life.
Daniel Duane, Chenyang Zhu, Felix Piavsky, Olav Rune Godø, Nicholas C. Makris   +4 more
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Study on Influence of Cavity and Water Mist on Flame Propagation of Gas Explosion in a Pipeline

Geofluids, 2021
For studying the influence of the cavity and water mist on the flame propagation of gas explosion, a rectangular steel cavity of size of length 80 cm×width 50 cm×height 20 cm was designed.
Shicheng Gu, Shujie Yuan, Zhuo Yan, Xiaoxue Xu   +3 more
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Energy Evolution Mechanism of Air Shock Wave Propagation and Attenuation Based on VMD–HT Energy Spectrum [PDF]

Journal of Applied Fluid Mechanics, 2022
Energy spectrum is an important tool for reflecting time–frequency characteristics of signals. The energy spectra of air shock wave at different explosion distances ware analyzed to investigate the energy evolution mechanism in the propagation and ...
W. Shang, Z. Huang, X. Zu, Q. Xiao, X. Jia   +4 more
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Influence of shape factor of rectangular roadway on electromagnetic waves under high-order mode

Gong-kuang zidonghua, 2019
The propagation characteristics of electromagnetic waves in different shape roadway are different, and are also different in different modes. On the basis of analysis of theory of electromagnetic wave transmission and multi-mode theory, the influence of ...
WANG Xuqi
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Theoretical Analysis of Longitudinal Wave Attenuation in a Stressed Rock With Variable Cross-Section

Frontiers in Earth Science, 2019
In this work, the longitudinal wave propagation in stressed rock with variable cross-section is investigated analytically. Considered the stress-sensibility of dynamic elastic modulus and the viscosity of rock, a modified viscoelastic stress-strain ...
Wei Yuan, Jiefang Jin, Zhongqun Guo, Yue Wu   +3 more
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