Results 271 to 280 of about 12,544,059 (345)
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IEEE Transactions on Magnetics, 1984
A laboratory eddy current imaging system has been assembled to scan a probe over a sample and to record digital eddy current images. The system is microprocessor controlled and it transmits images to a VAX 780 computer for image processing. These images have been used for probe characterization and to study the imaging process.
R. McCary +3 more
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A laboratory eddy current imaging system has been assembled to scan a probe over a sample and to record digital eddy current images. The system is microprocessor controlled and it transmits images to a VAX 780 computer for image processing. These images have been used for probe characterization and to study the imaging process.
R. McCary +3 more
openaire +1 more source
IEEE transactions on magnetics, 2018
An eddy current test (ECT) is a common nondestructive test to detect flaws in metal structures. Many ECTs use both a detection coil and an induction coil.
K. Tsukada +4 more
semanticscholar +1 more source
An eddy current test (ECT) is a common nondestructive test to detect flaws in metal structures. Many ECTs use both a detection coil and an induction coil.
K. Tsukada +4 more
semanticscholar +1 more source
Novel Noncontact Eddy Current Measurement of Electrical Conductivity
IEEE Sensors Journal, 2018A new noncontact method for measuring the electrical conductivity of metals based on eddy current testing is proposed for the physics that the logarithm of phase signals of impedance change is linear to that of electrical conductivity.
Cuiping Wang +4 more
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Experiments with eddy currents: the eddy current brake
European Journal of Physics, 2004A moderate-cost experimental setup is presented to help students to understand some qualitative and quantitative aspects of eddy currents. The setup operates like an eddy current brake, a device commonly used in heavy vehicles to dissipate kinetic energy by generating eddy currents. A set of simple experiments is proposed to measure eddy current losses
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Eddy Current Losses in a Hairpin Winding for an Automotive Application
International Conference on Electrical Machines, 2018It is well known that the effect of eddy current loss increases with a greater cross-sectional area of a wire exposed to a time-varying magnetic field. When using hairpin windings instead of conventional windings, the cross-sectional area of the strands ...
C. Du-Bar, O. Wallmark
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Correction of B0 eddy current effects in spiral MRI
Magnetic Resonance in Medicine, 2018B0 eddy currents are a subtle but important source of artifacts in spiral MRI. This study illustrates the importance of addressing these artifacts and presents a system response‐based eddy current correction strategy using B0 eddy current phase ...
R. Robison +4 more
semanticscholar +1 more source
1982
A new concept, phasography, has been developed showing excellent potential for high resolution imaging of flaws using eddy current data. The process may be thought of as an eddy current equivalent to acoustic holography. Phase multiplication of the detected coherent signal is used to simulate a test wavelength one to two orders of magnitude smaller ...
H. Dale Collins +3 more
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A new concept, phasography, has been developed showing excellent potential for high resolution imaging of flaws using eddy current data. The process may be thought of as an eddy current equivalent to acoustic holography. Phase multiplication of the detected coherent signal is used to simulate a test wavelength one to two orders of magnitude smaller ...
H. Dale Collins +3 more
openaire +1 more source
Analysis and numerical modelling of eddy current damper for vibration problems
Journal of Sound and Vibration, 2018This work discusses a contactless eddy current damper, which is used to attenuate structural vibration. Eddy currents can remove energy from dynamic systems without any contact and, thus, without adding mass or modifying the rigidity of the structure. An
L. Irazu, M. J. Elejabarrieta
semanticscholar +1 more source
2018
In eddy current tomography, the conductivity profile of conductive materials is reconstructed through the inversion of eddy current data (ECT). The state of the art of imaging methods in ECT data inversion is represented by iterative methods, the drawbacks of which are their high computational cost and the risk of becoming trapped in false solutions ...
a. tamburrino, g. rubinacci
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In eddy current tomography, the conductivity profile of conductive materials is reconstructed through the inversion of eddy current data (ECT). The state of the art of imaging methods in ECT data inversion is represented by iterative methods, the drawbacks of which are their high computational cost and the risk of becoming trapped in false solutions ...
a. tamburrino, g. rubinacci
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Physics Education, 1992
The eddy current effect can be demonstrated in a striking, simple and cheap way by comparing the time it takes a magnet to drop down a length of copper tubing with the time for an apparently identical but non-magnetic sample.
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The eddy current effect can be demonstrated in a striking, simple and cheap way by comparing the time it takes a magnet to drop down a length of copper tubing with the time for an apparently identical but non-magnetic sample.
openaire +1 more source