Abstract
This paper describes simulations of magnetic field strength distributions for magneto–conductive material in order to be able to optimize a measurement set–up that should be capable to detect minute changes of the magnetic field strength at the surface of a specimen containing some kind of material inhomogeneities or anisotropies of magnetic properties. The sensitivity which ultimately is limited by the noise figure of the sensing effect (GMR = giant magneto resistive effect) can be evaluated with respect to the detection of deviations in eddy current patterns caused by inhomogeneities of the material’s conductivity or the anisotropy of magnetic properties of the specimen’s material.
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References
Hauser, H., et al.: Magnetoresistors. In: Magnetic Sensors and Magnetometers, pp. 129-171 (2001)
Blitz, J.: Electrical and Magnetic Methods of Non–destructive Testing, 2nd edn. (1997)
Coughlin, C.R., et al.: Effects of Stress on MFL Responses From Elongated Corrosion Pits in Pipeline Steel. In: NDT&E International, vol. 33, pp. 118–188 (2000)
Atzlesberger, J., Zagar, B.G.: Detection of Inhomogeneities in Magneto–Conductive Objects. In: Proc. of the SSD 2011, Sousse, Tunisia (2011)
Niese, F.: Wall Thickness Measurement Sensor for Pipeline Inspection using EMAT Technology in Combination with Pulsed Eddy Current and MFL. In: ECNDT (2006)
Göktepe, M.: Non–destructive Crack Detection by Capturing Local Flux Leakage Field. In: Sensors and Actuators, 70–72 (2001)
Ricken, W.: GMR and Eddy Current Sensor in Use of Stress Measurement. Sensor and Actuators A91, 42–45 (2001)
Foerster, F.: On the Way from the Know–How to Know–Why in the Magnetic Leakage Field Method of Nondestructive Testing, pp. 1154–1398 (1985)
Strassacker, G., Strassacker, P.: Analytische und numerische Methoden der Feldberechnung, Teubner, Germany (1993)
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Atzlesberger, J., Zagar, B.G. (2012). Optimization of a Magnetic Flux Leakage Measurement Set–Up Using FEM–Simulations. In: Moreno-Díaz, R., Pichler, F., Quesada-Arencibia, A. (eds) Computer Aided Systems Theory – EUROCAST 2011. EUROCAST 2011. Lecture Notes in Computer Science, vol 6928. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-642-27579-1_1
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DOI: https://doi.org/10.1007/978-3-642-27579-1_1
Publisher Name: Springer, Berlin, Heidelberg
Print ISBN: 978-3-642-27578-4
Online ISBN: 978-3-642-27579-1
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