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Differential permeability behaviour of P9 and T22 power station Steels
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Karimian, N., Wilson, J.W., Peyton, A. J., Yin, W., Liu, Jun and Davis, Claire (2014) Differential permeability behaviour of P9 and T22 power station Steels. Journal of Magnetism and Magnetic Materials, Volume 352 . pp. 81-90. doi:10.1016/j.jmmm.2013.09.059
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Official URL: http://dx.doi.org/10.1016/j.jmmm.2013.09.059
Abstract
Analysis of the electromagnetic (EM) properties of power station steels, measured using a non-contact magnetic sensor, is of significance as such properties are indicative of the microstructure of the material and can be potentially exploited for non-destructive testing. In this paper, we present EM measurements of cylindrical power station steel samples (P9 and T22 grades) with different microstructures: normalised and tempered (representative of the initial condition), as normalised and after service exposure. In order to obtain the magnetic properties the B–H curves of these samples were measured. Cylindrical air-cored and printed circuit board (PCB) coil integrated sensors were used to measure the incremental permeability. Analytical and numerical methods (Finite Elements Methods) were employed to calculate the sensor response of these samples. The electromagnetic properties of the different steels were inferred by fitting the finite element models to the measured results. In addition, sensitivity and error analysis were carried out to evaluate the accuracy of the method.
| Item Type: | Journal Article | ||||||||
|---|---|---|---|---|---|---|---|---|---|
| Subjects: | T Technology > TK Electrical engineering. Electronics Nuclear engineering | ||||||||
| Divisions: | Faculty of Science > WMG (Formerly the Warwick Manufacturing Group) | ||||||||
| Library of Congress Subject Headings (LCSH): | Electric power-plants, Steel -- Permeability, Hysteresis , Finite element method | ||||||||
| Journal or Publication Title: | Journal of Magnetism and Magnetic Materials | ||||||||
| Publisher: | Elsevier Science BV | ||||||||
| ISSN: | 0304-8853 | ||||||||
| Official Date: | February 2014 | ||||||||
| Dates: |
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| Volume: | Volume 352 | ||||||||
| Page Range: | pp. 81-90 | ||||||||
| DOI: | 10.1016/j.jmmm.2013.09.059 | ||||||||
| Status: | Peer Reviewed | ||||||||
| Publication Status: | Published | ||||||||
| Access rights to Published version: | Open Access | ||||||||
| Funder: | Engineering and Physical Sciences Research Council (EPSRC) | ||||||||
| Grant number: | EP//H022937 |
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