Strain detection in non-magnetic steel by Kerr-microscopy of magnetic tracer layers

Jourdan M, Kraemer MMB, Klaeui M, Elmers HJ, Deldar S, Smaga M, Beck T (2018)

Publication Type: Journal article

Publication year: 2018

Journal

Journal of Magnetism and Magnetic Materials Elsevier

Book Volume: 465

Pages Range: 143-146

DOI: 10.1016/j.jmmm.2018.05.081

Abstract

For many applications of steel, e.g. for the evaluation of the fatigue state of components or structures, the characterization of the microscopic strain distribution in the material is important. We present a proof-of-principle for the visualization of such strain distributions by Kerr-microscopy of ferromagnetic tracer layers on nonmagnetic steel sheets. The influence of indentation induced strain on the magnetic domain pattern of 20 nm Galfenol and Permalloy tracer layers on austenitic AISI 904L steel sheets was investigated. The obtained Kerr-microscopy images show a characteristic domain pattern in the strained regions of the steel sheets, which is consistent with a dominant magneto-elastic contribution to the domain pattern formation.

Involved external institutions

Johannes Gutenberg-Universität Mainz (JGU) DE Germany (DE) Technische Universität Kaiserslautern DE Germany (DE)

How to cite

APA:

Jourdan, M., Kraemer, M.M.B., Klaeui, M., Elmers, H.-J., Deldar, S., Smaga, M., & Beck, T. (2018). Strain detection in non-magnetic steel by Kerr-microscopy of magnetic tracer layers. Journal of Magnetism and Magnetic Materials, 465, 143-146. https://doi.org/10.1016/j.jmmm.2018.05.081

MLA:

Jourdan, Martin, et al. "Strain detection in non-magnetic steel by Kerr-microscopy of magnetic tracer layers." Journal of Magnetism and Magnetic Materials 465 (2018): 143-146.

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