Results 251 to 260 of about 383,826 (295)

Magnetic flux density standard for geomagnetometers

Metrologia, 2000
A high-precision standard has been established to create a dc magnetic field in the expanded geomagnetic range 10 µT to 110 µT. Over this range the systematic standard uncertainty of the total magnetic field is (0.003 − 0.03) nT, with a random standard deviation of 0.002 nT, inside a sphere 10 cm in diameter.
V Ya Shifrin, E B Alexandrov, T I Chikvadze, V N Kalabin, V N Yakobson, V N Khorev, P G Park   +6 more
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Measurement of magnetic flux density vector

2012 6th European Conference on Antennas and Propagation (EUCAP), 2012
This contribution presents a measurement of harmonically changing magnetic flux density in the free space. The components of magnetic flux density vector are measured separately as effective value in the time. The measuring probe and its calibration are described in detail.
Jan Kracek, Milos Mazanek
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The Effect of Magnetic Flux Density Magnitude on Machine Performance

Nigerian Journal of Engineering, 2023
The effect of magnetic flux density magnitude on electromagnetic performance of a double stator permanent magnet synchronous machine is investigated and presented in this study. Finite element analysis method is applied in computing the results. The considered machine variables are: torque, losses, efficiency and electromagnetic power.
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Distribution of Magnetic Flux Density and Magnetic Force in EMR

Advanced Materials Research, 2013
Distribution of magnetic flux density and magnetic force in electromagnetic riveting was investigated with the electromagnetic field coupling model established by the finite element method. The results show the radial magnetic flux density presents a sinusoidal exponential decaying form at a point and the maximum value of radial magnetic flux density ...
Jiang Hua Deng, Chao Tang, Yan Ran Zhan, Xing Ying Jiang   +3 more
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Anti-counterfeiting Using Irregularities of Magnetic Flux Density

2015 IEEE International Conference on Computer and Information Technology; Ubiquitous Computing and Communications; Dependable, Autonomic and Secure Computing; Pervasive Intelligence and Computing, 2015
In recent years, many studies have used physical unclonable functions (PUFs), which are difficult to reproduce and highly secure, as a means to discriminate between counterfeit and authentic goods. Magnetic materials are widely used in items ranging from everyday goods to medical equipment and may be good PUF candidates given their versatility compared
Hyunho Kang, Keiichi Iwamura
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Magnetic Hysteresis at Low Flux Densities

Physics, 1935
The energy loss per cycle in a ferromagnetic material subjected to small alternating fields is sometimes separated into three parts; the first due to eddy current loss, the second to hysteresis presumed to follow Rayleigh's laws at these flux densities. The origin of the remainder is unknown and is the subject of much controversy; it has been variously
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Current and Magnetic Flux Density

2013
We know that there exists a force between currents. This phenomenon is similar to the Coulomb force between electric charges. Hence, we can presume that currents also make some field in space similar to the electric field made by electric charges. This field is called the magnetic field.
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Magnetic flux density measurements in rotating machines

Transactions of the American Institute of Electrical Engineers, Part I: Communication and Electronics, 1955
The Hall effect in a semiconductor is utilized to measure the flux density in the air gap of a rotating machine under transient conditions of starting and loading. This method offers several advantages over the conventional exploring-coil generator. Measurements of the flux density in a synchronous converter were made to demonstrate its applicability.
B. J. Ley, A. Charmatz
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Cytogenetic effects of 50 Hz magnetic fields of different magnetic flux densities

Bioelectromagnetics, 2000
Cytogenetic investigations were performed in human peripheral blood lymphocytes following exposure to 50 Hz magnetic fields alone or in combination with the chemical mutagen mitomycin C or with X-rays. It was found that magnetic fields up to 2500 microT did not significantly influence the chromosome aberration and sister chromatid exchange frequency ...
A, Maes, M, Collier, S, Vandoninck, P, Scarpa, L, Verschaeve   +4 more
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Directability of magnetic flux density vector in magnetostimulators

Proceedings of the Annual International Conference of the IEEE Engineering in Medicine and Biology Society, 1988
The study of long-bone magnetobiological repair not only implies adjustment of the magnetic flux density intensity and shape in the time domain but also the orientation of magnetic flux density relative to the fracture area. For this purpose, two mechanically different types of magnetostimulators have been manufactured: one with a single solenoid to ...
N. Dekleva, M. Manojlovic, B. Beleslin, V. Majic   +3 more
openaire   +1 more source