Steel Hardness Determination Using the Barkhausen Noise Effect

Eirini Varouti; C. Giannouli; Z. Petrakou; K. Sapountzi

doi:10.4028/www.scientific.net/KEM.495.229

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Magnetic Field Sensor Based on the Domain Wall Nucleation and Propagation
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HomeKey Engineering MaterialsKey Engineering Materials Vol. 495Steel Hardness Determination Using the Barkhausen...

Steel Hardness Determination Using the Barkhausen Noise Effect

Abstract:

The Barkhausen noise technique (BHN) has been used as a non destructive tool for the measurement of the hardness in various types of steel, namely low carbon steel, TRIP steel, Duplex steel and welding in low carbon steel. The steel samples have undergone different mechanical treatment, such as plastic deformation, cold rolling or welding. Hardness and microhardness have been determined in terms of Vickers standards. A remarkably linear dependence of the BHN on the Vickers hardness of the corresponding samples with an uncertainty in the order of 3-5% has been achieved, illustrating that the BHN may be used as a non destructive tool for determining the Vickers hardness in steels. Furthermore, BHN measurements have obtained on the welding area, along the thermally affected zone and the weld itself, illustrating the theoretically expected stress field distribution.

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Periodical:

Key Engineering Materials (Volume 495)

Pages:

229-232

DOI:

https://doi.org/10.4028/www.scientific.net/KEM.495.229

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Online since:

November 2011

Authors:

Eirini Varouti, C. Giannouli, Z. Petrakou, K. Sapountzi

Keywords:

Barkhausen Noise, Hardness, Microhardness

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