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Dipole Modeling of Magnetic Flux Leakage
IEEE Transactions on Magnetics, 2009In this paper, we present an analytical model to represent the 3-D magnetic flux leakage (MFL) field due to the occurrence of a surface-breaking defect in a ferromagnetic specimen. This situation is frequently encountered in the nondestructive evaluation (NDE) of energy pipelines using the MFL technique.
S.M. Dutta, F.H. Ghorbel, R.K. Stanley
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Technical Physics, 2004
A betatron on the leakage flux from two windings connected oppositely and laid around a closed magnetic circuit is considered. The governing magnetic field in the interpole gap is created by a leakage magnetic flux between the windings, while the accelerating magnetic flux is generated by the difference of the ampere-turns of the windings in a closed ...
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A betatron on the leakage flux from two windings connected oppositely and laid around a closed magnetic circuit is considered. The governing magnetic field in the interpole gap is created by a leakage magnetic flux between the windings, while the accelerating magnetic flux is generated by the difference of the ampere-turns of the windings in a closed ...
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Development of a Leakage Flux-Controlled Reactor
IEEE Transactions on Applied Superconductivity, 2014In order to flexibly compensate reactive power, it is necessary to develop a controllable reactor in long distance and ultrahigh voltage system. A leakage flux-controlled reactor (LFCR) is developed in this paper. The operation principles of LFCR are discussed in detail, and a 380 V single-phase LFCR prototype is developed.
S. Shen +11 more
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2016
As early as 1868, the British Naval Architects Association began to use magnetic flux leakage technology and found defects on the steel pipe through the compass. In 1918, it was found that powder was absorbed near defects due to the changes of surface magnetic field; thus, magnetic particle detection method was invented.
Songling Huang, Shen Wang
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As early as 1868, the British Naval Architects Association began to use magnetic flux leakage technology and found defects on the steel pipe through the compass. In 1918, it was found that powder was absorbed near defects due to the changes of surface magnetic field; thus, magnetic particle detection method was invented.
Songling Huang, Shen Wang
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Nondestructive Testing Communications, 1985
Abstract Direct flux leakage imaging has been achieved using sensitive magnetic garnet films as the detector of the magnetic field.
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Abstract Direct flux leakage imaging has been achieved using sensitive magnetic garnet films as the detector of the magnetic field.
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Flux leakage analysis of transverse-flux PM linear machine
2014 17th International Conference on Electrical Machines and Systems (ICEMS), 2014A novel cylindrical transverse-flux permanentmagnet linear machine (TFPMLM) is proposed in this paper. It aims to solve the problems of high flux leakage and low power factor existing in the traditional TFPMLM, with good manufacturability. As the main reason of low power factor, the flux leakage of transverse flux machine is investigated.
Bin Yu +4 more
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Proceedings of the Institution of Electrical Engineers, 1966
The magnetic field inside and outside a body of high magnetic permeability ?r is expressed as a power series in 1/?r. Equations are obtained for the expansion coefficients, and a simple 2-dimensional example is solved numerically.
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The magnetic field inside and outside a body of high magnetic permeability ?r is expressed as a power series in 1/?r. Equations are obtained for the expansion coefficients, and a simple 2-dimensional example is solved numerically.
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MAGNETIC FLUX LEAKAGE: A BENCHMARK PROBLEM
AIP Conference Proceedings, 2011The magnetic flux leaked by artificial notches machined by EDM is measured for two different rectangular steel plates. The measurements were performed for different field intensities, different liftoffs, and both sides, simultaneously recording the three components of the magnetic field.
J. I. Etcheverry +4 more
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Investigation of the flux leakage effects in transverse-flux magnetic gear
2017 20th International Conference on Electrical Machines and Systems (ICEMS), 2017The purpose of this paper is to investigate the flux leakage effects in the transverse-flux magnetic gear (MG), in which two typical flux leakage phenomena are identified and analyzed, namely, end leakage and fringing leakage. By using the JMAG 12.1 software, the three-dimensional finite element analysis (3D-FEA) modeling surrounded by some blocks with
Xianglin Li +3 more
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Leakage flux modelling in magnetic fluids test bench
2016 IEEE International Conference on Advanced Intelligent Mechatronics (AIM), 2016The proposed paper discusses a new methodology to monitor the B-H curve of magnetic fluids, which have low relative permeability. The set-up consists of a magnetic circuit which encloses a sample. A first coil allows creating a magnetic field into the sample whereas a second one measures the flux density.
Cecile Cuchet +4 more
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