Detection of stress concentrations around a defect by magnetic Barkhausen noise measurements

1996 ◽  
Vol 80 (11) ◽  
pp. 6391-6395 ◽  
Author(s):  
K. Mandal ◽  
D. Dufour ◽  
R. Sabet‐Sharghi ◽  
B. Sijgers ◽  
D. Micke ◽  
...  
Keyword(s):  
Barkhausen Noise ◽  
Magnetic Barkhausen Noise ◽  
Stress Concentrations ◽  
Noise Measurements ◽  
Detection Of Stress

Magnetic Barkhausen Noise Measurements to Assess Temper Embrittlement in HY-80 Steels

2020 ◽  
Vol 56 (3) ◽  
pp. 1-8
Author(s):  
Aroba Saleem ◽  
P. Ross Underhill ◽  
Shannon P. Farrell ◽  
Thomas W. Krause
Keyword(s):  
Temper Embrittlement ◽  
Barkhausen Noise ◽  
Magnetic Barkhausen Noise ◽  
Noise Measurements

The effect of DC magnetic field on signal characteristics of magnetic Barkhausen noise

2020 ◽  
Vol 64 (1-4) ◽  
pp. 887-894
Author(s):  
Chengyong Liu ◽  
Erlong Li ◽  
Shiqiang Wang ◽  
Jianbo Wu ◽  
Hui Fang ◽  
...  
Keyword(s):  
Magnetic Field ◽  
Magnetic Fields ◽  
Peak Position ◽  
Barkhausen Noise ◽  
Magnetic Barkhausen Noise ◽  
Dc Magnetic Field ◽  
Actual Application ◽  
Detection Technology ◽  
Signal Characteristics ◽  
Detection Of Stress

Magnetic Barkhausen Noise (MBN) detection technology shows great potential in the pipeline detection of stress, microstructure, and fatigue damage. However, in actual application, some pipes such as those near power plant are exposed to external magnetic fields or contain remanence. The presence of these magnetic fields will affect MBN features and then influence the testing results. To investigate the effect of DC magnetic field on MBN signal characteristics, theoretical analysis and experimental verification were carried out in this paper. It is found that the intensity and direction of the DC magnetic field have great effects on MBN signal characteristics, including the changes in the energy of MBN signal, the peak position and the shape of MBN signal profile.

Characterization of Metallurgical Transformations in Multi-Phase High Strength Steels by Barkhausen Noise Measurement

2007 ◽  
Vol 539-543 ◽  
pp. 4283-4288
Author(s):  
Aurélie Hug-Amalric ◽  
Xavier Kleber ◽  
Jacques Merlin ◽  
Hélène Petitgand ◽  
Philip Meilland
Keyword(s):  
High Strength Steels ◽  
High Strength ◽  
Residual Austenite ◽  
Noise Measurement ◽  
Barkhausen Noise ◽  
Dual Phase ◽  
Magnetic Barkhausen Noise ◽  
Noise Measurements ◽  
Multi Phase

The potentialities of using the magnetic Barkhausen noise measurement in characterization of metallurgical transformations have been highlighted in multi-phase High Strength (HS) steels. This kind of steels are composed of different metallurgical constituents, such as ferrite, bainite, martensite or residual austenite. Recently, we found that it was possible to assess the proportion of phases in ferrite-martensite steels and in industrial Dual-Phase steels too. In this work, we show that the Barkhausen noise measurements can be also suitable to follow bainitic transformation in a TRIP steel.

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