Results 11 to 20 of about 213,770 (341)

Helioseismic analysis of the solar flare-induced sunquake of 2005 January 15 [PDF]

open access: yes, 2006
We report the discovery of one of the most powerful sunquakes detected to date, produced by an X1.2-class solar flare in active region 10720 on 2005 January 15.
Besliu-Ionescu, D.   +4 more
core   +1 more source

Comparative experimental studies of acoustic emission characteristics of sandstone and mudstone under the impacts of cyclic loading and unloading

open access: yesInternational Journal of Distributed Sensor Networks, 2018
In this article, the acoustic emission tests of uniaxial cyclic load imposed on or released from the sandstone and mudstone were carried out. The deformation and failure characteristics and the law governing the acoustic emission activity were studied ...
Guangming Zhao, Chao Wang, Dongxu Liang
doaj   +1 more source

Structural Health Monitoring of Large Structures Using Acoustic Emission-Case Histories [PDF]

open access: yes, 2019
Acoustic emission (AE) techniques have successfully been used for assuring the structural integrity of large rocket motorcases since 1963 [...
Ono, Kanji
core   +1 more source

Research of identification of acoustic emission signal of coal and rock

open access: yesGong-kuang zidonghua, 2013
In view of problem that it is difficult to identify acoustic emission signal of coal and rock burst under complicated noise environment, the paper proposed an identification method of acoustic emission signal of coal and rock based on wavelet packet and ...
TONG Min-ming   +3 more
doaj   +1 more source

Effect of steel fibres dosage in alkali-activated slag mortar on acoustic emission obtained during three-point bending tests

open access: yesMATEC Web of Conferences, 2017
The acoustic emission phenomenon is directly associated with nucleation of cracks in structural materials during loading. This paper analyses acoustic emission signals captured during three-point bending fracture tests of alkali-activated slag mortar ...
Topolář Libor   +3 more
doaj   +1 more source

Experimental study on characteristics of acoustic emission for coal containing gas damaged evolution under loading

open access: yesGong-kuang zidonghua, 2016
An information collection system of coal containing gas under uniaxial compression was built, dates' change of acoustic emission and mechanical parameters while coal samples loaded were tested, and damaged evolution model of coal and rock and ...
NIU Yue   +7 more
doaj   +1 more source

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

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

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

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

Home - About - Disclaimer - Privacy