Permanent magnet applications

Coey, J. M. D.

doi:10.1016/s0304-8853(02)00335-9

Cited by 332 publications

(136 citation statements)

References 16 publications

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“…Permanent magnets are used in a wide range of applications from energy-conversion devices (motors, loudspeakers, and electric generators and alternators), household appliances and cell phones to recent environmentally friendly technologies such as hybrid vehicles and wind turbines [1][2][3][4]. This increasing demand has led to impressive progress in permanent magnets for most of the 20th century through discovery of new materials and improvement in their energy products (BH) max [2][3][4].…”

Section: Introduction and Scopementioning

confidence: 99%

Prospects for nanoparticle-based permanent magnets

et al. 2012

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Section: Introduction and Scopementioning

confidence: 99%

Prospects for nanoparticle-based permanent magnets

et al. 2012

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“…Electromagnets have a number of advantages and disadvantages when compared with permanent magnets. The main advantage offered by permanent magnets is that they do not require a constant input of power to maintain the magnetic field [13].This is offset by the fact the an electromagnetic array allows for the field to be turned on and off during a test so that data can be collected with and without the magnetic field applied for the same sample during a single test. The same tests can be repeated using fields of different flux density by altering the current supplied to the coils.…”

Section: Electromagnetic Arraymentioning

confidence: 99%

The evaluation and implementation of magnetic fields for large strain uniaxial and biaxial cyclic testing of Magnetorheological Elastomers

Gorman¹,

Murphy²,

Ekins³

et al. 2016

Polymer Testing

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Magnetorheological Elastomers (MREs) are "smart" materials whose physical properties are altered by the application of magnetic fields. In previous studies the properties of MREs have been evaluated under a variety of conditions, however little attention has been paid to the recording and reporting of the magnetic fields used in these tests [1]. Currently there is no standard accepted method for specifying the magnetic field applied during MRE testing. This study presents a detailed map of a magnetic field applied during MRE tests as well as providing the first comparative results for uniaxial and biaxial testing under high strain fatigue test conditions. Both uniaxial tension tests and equi-biaxial bubble inflation tests were performed on isotropic natural rubber MREs using the same magnetic fields having magnetic flux densities up to 206mT. The samples were cycled between pre-set strain limits. The magnetic field was switched on for a number of consecutive cycles and off for the same number of following cycles. The resultant change in stress due to the application and removal of the magnetic field was recorded and results are presented.

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“…The classification of a medium by normative quality targets greatly depends on solution of this problem which also influences the timely decisions and efficient removal of ferroimpurities (e.g. with the help of magnetic separators [1][2][3][4][5][6]). Besides, it is important for modeling of the process of magnetic impact on ferroimpurities [7][8][9][10][11][12][13].…”

Section: Introductionmentioning

confidence: 99%

SOME characteristic properties of analytical method of magnetic control of ferroimpurities in various primary and technological media

et al. 2016

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-The paper demonstrates that when defining the content of ferroimpurities in the analyzed media by magnetic control based on measuring the ferroimpurities masses m, which are extracted from the media sample step-by-step, it is crucial to define a functional view of the obtained dependence m on the operation order number n. It allows receiving additional forecast data m by extrapolating this dependence. With corresponding calculations being done, it enables determining the sought total mass of ferroimpurities (including their residual mass). We consider alternate solutions of practical tasks which yield magnetic control results in case of linear and piecewise-linear views (in semi-logarithmic coordinates) of the control mass-operational characteristics.

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Permanent magnet applications

Cited by 332 publications

References 16 publications

Prospects for nanoparticle-based permanent magnets

Prospects for nanoparticle-based permanent magnets

The evaluation and implementation of magnetic fields for large strain uniaxial and biaxial cyclic testing of Magnetorheological Elastomers

SOME characteristic properties of analytical method of magnetic control of ferroimpurities in various primary and technological media

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