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Magneto-acoustic emission for the characterisation of ferritic stainless steel microstructural state
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Date
2004
Abstract
The role of residual stresses in the failure of metallic components and the need to determine such stresses is well recognised. Magneto-acoustic emission (MAE) is a relatively new non-destructive detection technique and its working principle is based on Barkhausen discontinuities or noise and magnetostriction when a ferromagnetic material is subjected to a varying magnetic field. MAE is being used to characterise the stress state of a ferritic stainless steel (AISI 430). Other stress measurement techniques; X-ray diffraction (XRD), magnetic Barkhausen noise (MBN) have also been used to support the results achieved using MAE. A new measurement parameter has been developed for microstructural characterisation called MAE absolute energy and has proved to be a useful quantitative method in MAE waveform measurement. (C) 2003 Elsevier B.V. All rights reserved.
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Description
peer-reviewed
Publisher
Elsevier
Citation
Journal of Magnetism and Magnetic Materials;271 (2-3), pp. 381-389
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Tanner_2004_magneto.pdf
Adobe PDF, 342.86 KB
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Enterprise Ireland (EI)