Magnetic field annihilators: invisible magnetization at the magnetic equator [PDF]
Geophysical Journal International, 2003 SUMMARY Some distributions of magnetization give rise to magnetic fields that vanish everywhere above the surface, rendering these distributions of magnetization completely invisible. They are the annihilators of the magnetic inverse problem. Known examples are the infinite sheet with constant magnetization and the spherical shell of constant ...
Maus, S., Haak, V.
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Journal of Engineering and Sustainable Development, 2022 The current study uses the finite element technique to investigate a single-phase induction motor with non-uniform stator slots. A 0.5 hp, four poles, 36 stator slots, and 48 rotor slots have non-uniform stator slots was analyzed based on magnet Finite ...
Marwa A. Dawood, Amer M. Ali
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Iron loss in permanent-magnet brushless AC machines under maximum torque per ampere and flux weakening control [PDF]
, 2002 The airgap flux density distribution, flux density loci in the stator core, and the associated iron loss in two topologies of brushless AC motor, having a surface-mounted magnet rotor and an interior-mounted magnet rotor, respectively, are investigated ...
Chen, Y.S., Howe, D., Zhu, Z.Q.
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A Nonlinear Impact-Driven Triboelectric Vibration Energy Harvester for Frequency Up-Conversion
Micromachines, 2023 Energy harvesting effectively powers micro-sensors and wireless applications. However, higher frequency oscillations do not overlap with ambient vibrations, and low power can be harvested.
Hadeel Abumarar, Alwathiqbellah Ibrahim
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Si effects on a thermal stability and a crystallization behavior of P-riched Fe(-Si)-B-P-Cu alloys
AIP Advances, 2019 Nanocrystalline soft magnetic ribbons with high saturation magnetic flux density Bs and low coercivity Hc are attracted for high power devices. Ribbon-shaped samples with compositions of Fe83.3B16-xPxCu0.7 (x=4-10) were prepared. The activation energy of
T. Tomita, T. Takahashi, H. Kuwata
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Association of Magnet Status With Hospitalization Outcomes for Ischemic Stroke Patients. [PDF]
, 2017 BACKGROUND: It is not clear whether Magnet recognition by the American Nurses Credentialing Center (nursing excellence program) is associated with improved patient outcomes.
Bekelis, Kimon +2 more
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Fe-Si-B-P-C-Cu nanocrystalline soft magnetic powders with high Bs and low core loss
AIP Advances, 2017 The magnetic properties of Fe-Si-B-P-C-Cu nanocrystalline powders were investigated. Fe-Si-B-P-C-Cu powders with a mostly amorphous structure were prepared by an atomization method.
T. Takahashi +6 more
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Investigation of suitability of the method of volume averaging for the study of heat transfer in superconducting accelerator magnet cooled by superfluid helium. [PDF]
, 2013 In the field of applied superconductivity, there is a growing need to better understand heat transfers in superconducting accelerator magnets. Depending on the engineering point of view looked at, either 0-D, 1-D, 2D or 3D modeling may be needed. Because
Allain, Hervé +5 more
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Hydrometallurgical Recovery of Rare Earth Elements from NdFeB Permanent Magnet Scrap: A Review
Metals, 2020 NdFeB permanent magnet scrap is regarded as an important secondary resource which contains rare earth elements (REEs) such as Nd, Pr and Dy. Recovering these valuable REEs from the NdFeB permanent magnet scrap not only increases economic potential, but ...
Yuanbo Zhang +5 more
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Magnetic Behavior of Sintered NdFeB Magnets on a Long-Term Timescale
Advances in Materials Science and Engineering, 2014 Stable polarization of permanent magnets over the lifetime of the application is an important aspect in electrical machine design. Specification of the long-term stability of magnet material is difficult, since knowledge of the phenomenon is incomplete ...
Minna Haavisto +5 more
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