Magnetoelastic Villari Effect in Structural Steel Magnetized in the Rayleigh Region

Kachniarz, Maciej; Kołakowska, Kinga; Salach, Jacek; Szewczyk, Roman; Nowak, Paweł

doi:10.12693/aphyspola.133.660

Cited by 3 publications

(2 citation statements)

References 9 publications

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“…The Rayleigh region should be lower than the coercivity ( H c ) for permalloy with high permeability. The fitting data were chosen to be in the range of 0.01 A/m to (0.5 × H c ) A/m according to the previous studies for other soft magnetic materials in [ 27 , 28 ]. The fitting results are shown by the blue solid line in Figure 3 , demonstrating a good agreement between the fitting curve and the test data.…”

Section: Test Results and Discussionmentioning

confidence: 99%

A Method to Measure Permeability of Permalloy in Extremely Weak Magnetic Field Based on Rayleigh Model

Sun

Zhang

et al. 2022

Materials

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In order to solve the problem that the relative permeability of the permalloy is missing and difficult to measure accurately in an extremely weak magnetic field (EWMF, <1 nT), a method to measure the permeability in EWMF based on the Rayleigh model is proposed in this paper. In this method, the Rayleigh model for the magnetic material was first introduced. Then, the test system for measuring the permeability of permalloy for the standard ring specimen was set up. Based on the test data and the Rayleigh model, the functional expression applied to obtain the permeability in EWMF is achieved. Finally, the feasibility and accuracy of the method are verified by the permeability measurement of the custom large-size ring specimen in EWMF (<1 nT) and residual field measurement based on the four-layer shielding cylinder. This method can obtain the relative permeability in any EWMF and avoid test errors caused by extremely weak magnetization signals.

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Section: Test Results and Discussionmentioning

confidence: 99%

A Method to Measure Permeability of Permalloy in Extremely Weak Magnetic Field Based on Rayleigh Model

Sun

Zhang

et al. 2022

Materials

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“…For research, the pipe shaped sample made of 13CrMo4-5 constructional steel was considered. This material has relative magnetic permeability of 80 [16]. The length of the sample was 100.00 mm, its external radius was 10.675 mm, and wall thickness was 0.35 mm.…”

Section: Methodsmentioning

confidence: 99%

Magnetoelastic Effect Detection with the Usage of Eddy Current Tomography

Nowak

2019

Materials

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The possibility of application of the eddy current tomography setup to measure the small permeability variations caused by magnetoelastic effect was presented. A ferromagnetic steel sample was prepared for applying wall stresses and measured for 30 MPa stresses. The Finite Element Method (FEM) was utilized to conduct numerical forward tomography transformation for samples of known permeability. Developed forward tomography transformation was applied for single variable inverse tomography transformation, utilized for determining magnetic permeability. This confirmed the possibility of the application of eddy current tomography for quantitative measurements of magnetoelastic effect in samples of known geometry.

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Investigation of Rayleigh region in strip like amorphous FINEMET samples after different heat treatments

Kováč

Kunca

Novák

2020

Journal of Magnetism and Magnetic Materials

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Magnetoelastic Villari Effect in Structural Steel Magnetized in the Rayleigh Region

Cited by 3 publications

References 9 publications

A Method to Measure Permeability of Permalloy in Extremely Weak Magnetic Field Based on Rayleigh Model

A Method to Measure Permeability of Permalloy in Extremely Weak Magnetic Field Based on Rayleigh Model

Magnetoelastic Effect Detection with the Usage of Eddy Current Tomography

Investigation of Rayleigh region in strip like amorphous FINEMET samples after different heat treatments

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