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Advances in Barkhausen noise analysis
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Paper Abstract

The magnetic Barkhausen Noise technique is a well suited method for the characterization of ferromagnetic materials. The Barkhausen effect results in an interaction between the magnetic structure and the microstructure of materials, and is sensitive to the stresses and microstructure related mechanical properties. Barkhausen noise is a complex signal that provides a large amount of information, for example frequency spectrum, amplitude, RMS value, dependence of magnetic field strength, magnetization frequency and fractal behavior. Although this technique has a lot potentials, it is not commonly used in nondestructive material testing. Large sensors and complex calibration procedures made the method impractical for many applications. However, research has progressed in recent years; new sensor designs were developed and evaluated, new algorithms to simplify the calibration and measurement procedures were developed as well as analysis of additional material properties have been introduced.

Paper Details

Date Published: 8 March 2014
PDF: 9 pages
Proc. SPIE 9061, Sensors and Smart Structures Technologies for Civil, Mechanical, and Aerospace Systems 2014, 90613R (8 March 2014); doi: 10.1117/12.2044454
Show Author Affiliations
Norbert Meyendorf, Fraunhofer-Institut für Zerstörungsfreie Prüfverfahren (Germany)
Susanne Hillmann, Fraunhofer-Institut für Zerstörungsfreie Prüfverfahren (Germany)
Ulana Cikalova, Fraunhofer-Institut für Zerstörungsfreie Prüfverfahren (Germany)
Juergen Schreiber, Fraunhofer-Institut für Zerstörungsfreie Prüfverfahren (Germany)

Published in SPIE Proceedings Vol. 9061:
Sensors and Smart Structures Technologies for Civil, Mechanical, and Aerospace Systems 2014
Jerome P. Lynch; Kon-Well Wang; Hoon Sohn, Editor(s)

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