Results 31 to 40 of about 2,686,420 (387)

Energy Spectrum of Acoustic Emission Signals in Complex Media [PDF]

open access: yesЖурнал нано- та електронної фізики, 2017
A model of the energy spectrum of acoustic emission signals in complex structures with internal degrees of freedom is proposed. On the basis of the computational experiment of X-ray diffraction data, a quantum mechanical calculation of the applicability ...
V.V.В Marasanov, A.A.В Sharko
doaj   +1 more source

Experimental investigation of pretensioned bolts under cyclic loading: Damage assessment using acoustic emission

open access: yesInternational Journal of Distributed Sensor Networks, 2019
Understanding the acoustic emission effects on bolts under cyclic loading is of great significance for the support of roadways. The presented research focuses on the acoustic emission characteristics of bolts under cyclic loading.
Tieliang An   +5 more
doaj   +1 more source

Study on the tensile properties of sandstone with different water contents under freeze-thaw cycles

open access: yesGong-kuang zidonghua, 2023
Mines in cold regions of China are affected by freeze-thaw cycles, resulting in uneven expansion and contraction of rocks, leading to the formation of cracks. At the same time, the expansion of cracks due to water frost heave between cracks leads to rock
MIAO Haodong, REN Fuqiang
doaj   +1 more source

Acoustic emission across the magnetostructural transition of the giant magnetocaloric Gd5Si2Ge2 compound [PDF]

open access: yes, 2005
We report on the existence of acoustic emission during the paramagnetic-monoclinic to ferromagnetic-orthorhombic magnetostructural phase transition in the giant magnetocaloric Gd5Si2Ge2 compound.
A. Planes   +9 more
core   +2 more sources

Influence of Propagation Distance on Characteristic Parameters of Acoustic Emission Signals in Concrete Materials Based on Low-Frequency Sensor

open access: yesAdvances in Civil Engineering, 2022
Acoustic emission is a nondestructive testing technology based on the propagation of transient elastic waves captured by acoustic emission sensors. The acoustic emission signal depends not only on the distance and quality of the propagation path of the ...
Fen Liu   +6 more
doaj   +1 more source

Resonant Airborne Acoustic Emission for Nondestructive Testing and Defect Imaging in Composites

open access: yesApplied Sciences, 2021
A new version of an acoustic emission mode which is different from its traditional counterpart is discussed in view of applications for nondestructive testing.
Igor Solodov   +2 more
doaj   +1 more source

Rock burst risk assessment of working face during open-off cut based on acoustic emission monitoring

open access: yesMeikuang Anquan, 2021
Impact risk assessment is a work that must be carried out in driving and stoping stage in mining coal seam with impact risk to ensure the safety of driving and stoping working face.
XING Linnan
doaj   +1 more source

Mechanical properties and acoustic emission characteristics of soft rock with different water contents under dynamic disturbance

open access: yesInternational Journal of Coal Science & Technology
Uniaxial compression tests and cyclic loading acoustic emission tests were conducted on 20%, 40%, 60%, 80%, dry and saturated muddy sandstone by using a creep impact loading system to investigate the mechanical properties and acoustic emission ...
Yujing Jiang   +6 more
semanticscholar   +1 more source

Multi-scale Modeling Approach to Acoustic Emission during Plastic Deformation

open access: yes, 2011
We address the long standing problem of the origin of acoustic emission commonly observed during plastic deformation. We propose a frame-work to deal with the widely separated time scales of collective dislocation dynamics and elastic degrees of freedom ...
Ananthakrishna, G., Kumar, Jagadish
core   +1 more source

Acoustic Emission Monitoring of the Syracuse Athena Temple: Scale Invariance in the Timing of Ruptures

open access: yes, 2010
We perform a comparative statistical analysis between the acoustic-emission time series from the ancient Greek Athena temple in Syracuse and the sequence of nearby earthquakes.
A. Carpinteri   +9 more
core   +1 more source

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