Detection of stress concentrations around a defect by magnetic Barkhausen noise measurements
- 1 December 1996
- journal article
- Published by AIP Publishing in Journal of Applied Physics
- Vol. 80 (11), 6391-6395
- https://doi.org/10.1063/1.363657
Abstract
The stress distribution around a 50% blind-hole pit in a steel pipe with a 9 mm wall has been studied using high-resolution magnetic Barkhausen noise (MBN) measurements. A magnetic disk read-head is used as the pick up coil in the MBN probe. The study shows a stress concentration factor of ∼2 at the defect edge perpendicular to the direction of applied stress and ∼−0.6 at the edge parallel to the same. The experimental results are consistent with the analytical solutions obtained by the Airy’s stress function approach.Keywords
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