Results 1 to 10 of about 61,631 (118)

Experimental and numerical investigation on shock wave attenuation in a chamber [PDF]

open access: yesScientific Reports
New types of explosives, such as fuel–air explosive (FAE), are capable of generating high pressure and have a long duration of action, which is extremely destructive to personnel and equipment in underground spaces.
Zhangjun Wu   +10 more
doaj   +2 more sources

Experimental investigation of blasting stress wave attenuation in sandstone with columnar charging using high-speed DIC technique [PDF]

open access: yesScientific Reports
The propagation and attenuation characteristics of blast stress waves in geotechnical media directly influence the fracture behavior of the medium and serve as a crucial basis for optimizing blasting parameter design.
Li Chengjie   +4 more
doaj   +2 more sources

Validity of the wave stationarity assumption on estimates of wave attenuation in sea ice: toward a method for wave–ice attenuation observations at global scales

open access: yesJournal of Glaciology, 2023
In situ observations of wave attenuation by sea ice are required to develop and validate wave–ice interaction parameterizations in coupled wave models.
Joey J. Voermans   +2 more
doaj   +1 more source

Amplitude-initiated open hysteresis loop of P-wave attenuation in sandstone: experimental study

open access: yesГорные науки и технологии, 2022
In the area of solid state physics and materials science, new knowledge has been attained in recent years about micro-nano-plasticity using high-precision measurements at low stresses and strain.
Eduard I. Mashinskii
doaj   +1 more source

Review of progress in seismic attenuation tomography

open access: yes地球与行星物理论评, 2022
Global and regional seismic attenuation models reveal anelastic heterogeneous structures in the earth, which shed new light on the temperature, melt and volatile fraction of Earth's interior, as well as the geodynamic processes and source focal ...
Andy Dai   +3 more
doaj   +1 more source

Numerical Study of Air Flow Induced by Shock Impact on an Array of Perforated Plates

open access: yesEntropy, 2021
This study is focused on the propagation behavior and attenuation characteristics of a planar incident shock wave when propagating through an array of perforated plates.
Lite Zhang   +4 more
doaj   +1 more source

Study on the scattering characteristics of electromagnetic wave with dielectric band

open access: yesDianzi Jishu Yingyong, 2022
When the electromagnetic signal penetrates the medium, its signal intensity will be reduced due to the scattering of electromagnetic waves and other reasons, and even change the polarity of electromagnetic waves.
Zhang Chao, Kong Xiaoyu, Zheng Dandan
doaj   +1 more source

Energy Evolution Mechanism of Air Shock Wave Propagation and Attenuation Based on VMD–HT Energy Spectrum [PDF]

open access: yesJournal 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   +4 more
doaj   +1 more source

On the acoustic attenuation characteristics of sonar detection in the salt-cavern gas storage environment

open access: yesFrontiers in Earth Science, 2023
Aiming at the acoustic attenuation in the salt-cavern environment, this paper established a theoretical relationship of the ultrasonic attenuation in the salt-cavern gas storage, based on the wave equation of the acoustic wave propagating in a non-ideal ...
Haiyan Yang   +5 more
doaj   +1 more source

Hydrate Attenuation Characteristics Based on the Patchy-Saturation Model

open access: yesFrontiers in Earth Science, 2022
At present, attenuation characteristics of hydrate applicable to the seismic frequency band are still controversial. In this study, the dispersion and attenuation characteristics of hydrate in different occurrence modes were defined from the mesoscale ...
Pengqi Liu   +7 more
doaj   +1 more source

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