Results 31 to 40 of about 302,242 (373)
Rock and Soil Mechanics, 2021 In order to investigate the response law of moisture content to the characteristic stress and acoustic emission characteristics of red sandstone, the uniaxial compression tests of red sandstone under different moisture content conditions were conducted ...
ZHAO Kui +4 more
doaj +1 more source
, 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
On the Anatomy of Acoustic Emission
The Journal of the Acoustical Society of AmericaAbrupt frictional fault failure is normally accompanied by acoustic emission (AE)—impulsive elastic wave broadcast—with amplitude proportional to particle velocity. The cumulative sum of the fault particle velocities is a slip displacement.In laboratory shear experiments described here, measurements of a sequence of laboratory earthquakes includes ...
Robert A. Guyer +4 more
openaire +1 more source
Acoustically modulated optical emission of hexagonal boron nitride layers [PDF]
Appl. Phys. Lett. 114, 171104 (2019), 2019 We investigate the effect of surface acoustic waves on the atomic-like optical emission from defect centers in hexagonal boron nitride layers deposited on the surface of a LiNbO$_3$ substrate. The dynamic strain field of the surface acoustic waves modulates the emission lines resulting in intensity variations as large as 50% and oscillations of the ...
arxiv +1 more source
Shock and Vibration, 2018 The relationships among the generation of acoustic emission, electromagnetic emission, and the fracture stress of rock grain are investigated, which are based on the mechanism of acoustic emission and electromagnetic emission produced in the process of ...
Fujun Zhao +6 more
doaj +1 more source
Acoustic Emission Detection and Analysis Method for Health Status of Lithium Ion Batteries
Sensors, 2021 The health detection of lithium ion batteries plays an important role in improving the safety and reliability of lithium ion batteries. When lithium ion batteries are in operation, the generation of bubbles, the expansion of electrodes, and the formation
Kai Zhang, Jianxiang Yin, Yunze He
doaj +1 more source
Acoustic emission frequency discrimination [PDF]
, 1988 In acoustic emission nondestructive testing, broadband frequency noise is distinguished from narrow banded acoustic emission signals, since the latter are valid events indicative of structural flaws in the material being examined. This is accomplished by
Graham, Lloyd J., Sugg, Frank E.
core +1 more source
Helioseismic analysis of the solar flare-induced sunquake of 2005 January 15
, 2007 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
Advanced Engineering Materials, EarlyView.This article provides a comprehensive overview of fundamentals and recent advances of transparent thin‐film surface acoustic wave technologies on glass substrates for monitoring and prevention/elimination of fog, ice, and frost. Fogging, icing, or frosting on optical lenses, optics/photonics, windshields, vehicle/airplane windows, and solar panel ...
Hui Ling Ong +11 more
wiley +1 more source
Journal of Hebei University of Science and Technology, 2016 To study tensile fracture of various component fibers of polyester/cotton yarns, acoustic emission signal acquisition device is built, which is used to collect the acoustic emission signals of polyester, cotton and polyester/cotton ring spun yarn ...
Jin WANG +4 more
doaj +1 more source