Results 21 to 30 of about 1,232,993 (290)

Sensoring Fusion Data from the Optic and Acoustic Emissions of Electric Arcs in the GMAW-S Process for Welding Quality Assessment

open access: yesSensors, 2012
The present study shows the relationship between welding quality and optical-acoustic emissions from electric arcs, during welding runs, in the GMAW-S process.
Eber Huanca Cayo   +1 more
doaj   +1 more source

Acoustic Emissions to Measure Drought-Induced Cavitation in Plants

open access: yesApplied Sciences, 2016
Acoustic emissions are frequently used in material sciences and engineering applications for structural health monitoring. It is known that plants also emit acoustic emissions, and their application in plant sciences is rapidly increasing, especially to ...
Linus De Roo   +3 more
doaj   +1 more source

Non-Extensive Statistical Mechanics in Acoustic Emissions: Detection of Upcoming Fracture in Rock Materials

open access: yesApplied Sciences, 2023
Acoustic emission (AE), recorded during uniaxial compressive loading with constantly increasing stress and stepped stress increments until the fracture of prismatic marble specimens, were analyzed in terms of non-extensive statistical mechanics (NESM ...
Andronikos Loukidis   +2 more
doaj   +1 more source

Towards an intraoperative feedback system for laparoscopic access with the Veress needle

open access: yesCurrent Directions in Biomedical Engineering, 2021
About 50 % of complications during laparoscopy occur when surgical access is created. The Veress needle and proposed technical alternatives do not provide reliable information to support the surgeons in guiding the needle, or the feedback is not clearly ...
Spiller Moritz   +6 more
doaj   +1 more source

Measurement and Analysis of Inadequate Friction Mechanisms in Liquid-Buffered Mechanical Seals Utilizing Acoustic Emission Technique

open access: yesVibration, 2021
Mechanical seals play an important role in the reliability of a process. Currently, the condition monitoring of mechanical seals is restricted due to the limitations of the traditional monitoring methods, including classical vibration analysis.
Manuel Medina-Arenas   +5 more
doaj   +1 more source

Estimation of Fine and Oversize Particle Ratio in a Heterogeneous Compound with Acoustic Emissions

open access: yesSensors, 2018
The final phase of powder production typically involves a mixing process where all of the particles are combined and agglomerated with a binder to form a single compound.
Ejay Nsugbe   +3 more
doaj   +1 more source

Correlation analysis between ceramic insulator pollution and acoustic emissions

open access: yesTecnoLógicas, 2015
Most of the studies related to insulator pollution are normally performed based on individual analysis among leakage current, relative humidity and equivalent salt deposit density (ESDD).
Benjamín Álvarez-Nasrallah   +4 more
doaj   +1 more source

On the Anatomy of Acoustic Emission

open access: yesThe Journal of the Acoustical Society of America
Abrupt 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   +2 more sources

Review of the Uses of Acoustic Emissions in Monitoring Cavitation Erosion and Crack Propagation

open access: yesFoundations
Nowadays, hydropower plants are being used to compensate for the variable power produced by the new fluctuating renewable energy sources, such as wind and solar power, and to stabilise the grid.
Ismael Fernández-Osete   +3 more
doaj   +1 more source

Early Detection and Identification of Fatigue Damage in Thrust Ball Bearings by an Acoustic Emission Technique

open access: yesLubricants, 2020
As rolling bearings are widely used in various machines, there is a strong need to detect any problems as early as possible. Although vibration analysis is commonly used in the diagnosis of rolling bearings, it is possible that the failure of such ...
Alan Hase
doaj   +1 more source

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