Results 31 to 40 of about 59,957 (305)

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

On the Anatomy of Acoustic Emission

open access: yesThe Journal of the Acoustical Society of America
Abrupt, local frictional fault failure comprises a displacement that is normally accompanied by acoustic emission (AE)—an impulsive elastic wave broadcast with an amplitude proportional to particle velocity. The aggregate of these displacements is the basic fault motion.
Robert A. Guyer   +4 more
openaire   +2 more sources

Observations of acoustic emission activity during gear defect diagnosis. [PDF]

open access: yes, 2003
It is widely recognised that acoustic emission (AE) is gaining ground as a non- destructive technique (NDT) for health diagnosis on rotating machinery.
Mba, David   +3 more
core   +1 more source

Detecting natural crack initiation and growth in slow speed shafts with the Acoustic Emission technology [PDF]

open access: yes, 2009
This paper presents results of an experimental investigation to assess the potential of the Acoustic Emission (AE) technology for detecting natural cracks in operational slow speed shafts.
Mba, David, Elforjani, Mohamed
core   +1 more source

Research on Acoustic Emission and Electromagnetic Emission Characteristics of Rock Fragmentation at Different Loading Rates

open access: yesShock 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

Prediction of Surface Topography Parameters in Direct Laser Interference Patterning of Stainless Steel Using Infrared Monitoring and Convolutional Neural Networks

open access: yesAdvanced Engineering Materials, EarlyView.
This study presents an infrared monitoring approach for direct laser interference patterning (DLIP) combined with a convolutional neural network (CNN). Thermal emission data captured during structuring are used to predict surface topography parameters.
Lukas Olawsky   +5 more
wiley   +1 more source

Acoustic Emission Detection and Analysis Method for Health Status of Lithium Ion Batteries

open access: yesSensors, 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

Karl Popper and the Mechanisms of Hydrogen Embrittlement

open access: yesAdvanced Engineering Materials, EarlyView.
Representation of the beginning of loss of ductility rather than embrittlement. Small concentrations of hydrogen in a diffusible form within iron are well‐established to harm the mechanical integrity of steels. There are theories that attempt to explain the pernicious role of hydrogen.
H. K. D. H. Bhadeshia
wiley   +1 more source

Acoustic emission in the friction of composite materials

open access: yesAviation, 2014
The model of acoustic emission signal formation during friction and wearing of surfaces of composite materials was examined. The forms of acoustic emission resultant signals were shown.
Sergey Filonenko, Aleksandr Kosmach
doaj   +1 more source

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