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Separation of Partial Discharges Sources and Noise Based on the Temporal and Spectral Response of the Signals
(2021-01-01)
The insulation systems of equipment, cables, and electrical machines subjected to high voltage are continuously exposed to multiple aging mechanisms of electrical, mechanical, thermal, and environmental type. Normally, a ...
NDT flaw mapping of steel surfaces by continuous magnetic Barkhausen noise: Volumetric flaw detection case
(ELSEVIER SCI LTD, 2009)
This paper reports the use of a non-destructive, continuous magnetic Barkhausen noise (CMBN) technique to investigate the size and thickness of volumetric defects, in a 1070 steel. The magnetic behavior of the used probe ...
Noise effect on statistical properties of type-I intermittency
(Elsevier Science, 2014-02)
In this work we analyze the noise effect on type-I intermittency, for which we develop a methodology based on a recently proposed technique used to model the reinjection probability density (RPD). This new methodology ...
Effect of scanner acoustic background noise on strict resting-state fMRI
(Associação Brasileira de Divulgação Científica, 2013)
Acoustic Imaging of In-Duct Aeroengine Noise Sources Using Rotating Beamforming and Phased Arrays
(Ieee-inst Electrical Electronics Engineers Inc, 2017-09-01)
An in-duct rotating beamforming technique, using a wall-mounted array of microphones placed within a long duct, was developed for locating broadband noise sources from an aeroengine fan. The technique was experimentally ...
A study of plastic deformation around a defect using the magnetic Barkhausen noise in ASTM 36 steel
(ELSEVIER SCI LTD, 2008)
The present work presents the measurements of the magnetic Barkhausen noise (MBN) in ASTM 36 steel samples around a pit under plastic deformation. The contour maps obtained from these Barkhausen noise measurements are ...
Zoneamento ambiental acÚstico como estratÉgia de gestÃo e controle da poluiÇÃo sonora Urbana
(2015-12-01)
Its impacts transformed noise pollution in one of the most severe forms of environmental degradation. However, considering the constant urban and demographic growing, with respective increase and densification of noise ...
On closed-section wind-tunnel aeroacoustic experiments with a two-dimensional lifting body
(2019-05-01)
Slat noise experiments are sometimes performed to provide data for the validation of numerical procedures. Under such circumstances, closed-section wind-tunnels, in contrast with open-section ones, offer well-defined ...
Chaos-based communication systems in non-ideal channels
(ElsevierAmsterdam, 2012)