Results 31 to 40 of about 18,801 (297)

Acoustic Emission for the detection of shaft-to-seal rubbing in large power generation turbines [PDF]

, 2006
Proceedings of the 27th European Conference on Acoustic Emission Testing (EWGAE 2006), 20-22 September 2006, Cardiff, Wales, UKAn empirical investigation is undertaken in order to assess the potential of the AE technique for the detection of seal-to ...
Mba, David, Owen, D., A. Montgomery, Leahy, Mark J., D. Mba, Mark John Leahy, D. Owen, Cooper, P., P. Cooper, Montgomery, A.   +9 more
core   +1 more source

On the Anatomy of Acoustic Emission

The 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, Samson marty, Chris Marone, Paul A. Johnson, Christopher W Johnson   +4 more
openaire   +2 more sources

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

Foundations
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, David Bermejo, Xavier Ayneto-Gubert, Xavier Escaler   +3 more
doaj   +1 more source

Observations of acoustic emission in a hydrodynamic bearing [PDF]

, 2009
Purpose - Numerous studies have been conducted in the field of acoustic emission (AE) technology applied to rotating machine fault diagnosis. Principally, most of the work to date has been focused on correlating AE activity to the defect condition on ...
Mba, David, Mirhadizadeh, S. A.
core   +1 more source

Application of acoustic emission to seeded gear fault detection [PDF]

, 2005
Acoustic emission (AE) is gaining ground as a non-destructive technique for health diagnosis on rotating machinery. There are vast opportunities for development of the AE technique on various forms of rotating machinery, including gearboxes.
Mba, David, Tan, Chee Keong, Toutountzakis, Tim   +2 more
core   +1 more source

Laser Powder Bed Fusion of Alumina: Effects of Scanning Strategies on External and Internal Defects

Advanced Engineering Materials, EarlyView.
This study investigates how scanning strategies affect pure alumina in laser powder bed fusion. Linear 45° scanning yields uniform surfaces but high porosity, while the island‐concentric strategy provides higher density with through‐holes favorable for infiltration. Findings highlight pathways toward optimizing defect‐free alumina parts.
Mohamed Abdelmoula, Gökhan Küçüktürk, Duran Kaya, David Grossin, Christophe Tenailleau, Benjamin Duployer, Enrique Juste, Fabrice Petit   +7 more
wiley   +1 more source

The use of acoustic emissions technique in the monitoring of fracturing in concrete using soundless chemical demolition agent

Fracture and Structural Integrity, 2019
Soundless chemical demolition agents (SCDAs) have been used during the last decades in the demolition of boulders and concrete structures as well as in open-surface and sub-surface rock excavation, as an alternative to the use of explosives posing safety
Vassilios Saltas,, Despoina Peraki, Filippos Vallianatos   +2 more
doaj   +1 more source

An initial investigation on the potential applicability of Acoustic Emission to rail track fault detection. [PDF]

, 2004
In light of recent accidents in the rail industry, the assessment of the mechanical integrity of rail-track is of vital importance. This encompasses the integrity of the track due to rolling contact fatigue and surface wear. Whilst numerous techniques
Mba, David, Bruzelius, Kristoffer
core   +1 more source

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

Advanced 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, Marcelo Sallese, Leander Kläber, Clemens Kuhn, Keming Du, Andrés Fabián Lasagni   +5 more
wiley   +1 more source

Acoustic Emission Characteristics of Galling Behavior from Dry Scratch Tests at Slow Sliding Speed

Acoustics
Galling wear, a severe form of wear, is a known problem in sheet metal forming. As the wear state is not directly observable in closed tribosystems, such as in industrial sheet metal forming processes, indirect tool wear monitoring techniques for ...
Timothy M. Devenport, Ping Lu, Bernard F. Rolfe, Michael P. Pereira, James M. Griffin   +4 more
doaj   +1 more source