Investigation of the stress-dependent magnetic easy axis in steel using magnetic Barkhausen noise

Krause, Thomas W.; Clapham, L.; Pattantyus, A.; Atherton, D.L.

doi:10.1063/1.361878

Cited by 95 publications

(65 citation statements)

References 22 publications

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“…However, contrary to the previously 144 published statement [8,11], the extremes of the BN parameters are found to deviate …”

Section: Bmax Brcontrasting

confidence: 54%

“…At present, there is a strong demand for the non-destructive reliable 12 estimation of the remaining lifetimes of steel constructions; e.g., constructions in power 13 plants [9]. The present work was conducted in the framework of round robin testing Comparing with previous works [3,4,6,8], including our own [5,7,9], the present in detail [11,12]. On the basis of the data obtained, our previous experience and 26 other published results, the observed magnetic behaviour was explained in terms of 27 the magnetoelastic coupling with the applied/residual stresses and the DW pinning …”

mentioning

confidence: 99%

“…However, the important topic of magnetic anisotropy 8 caused by uniaxial deformations has been little investigated so far, probably owing to 9 the difficulties of realizing such experiments [4,6,7,8].…”

mentioning

confidence: 99%

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Magnetic anisotropy of plastically deformed low-carbon steel

Stupakov

Uchimoto

Takagi

2010

J. Phys. D: Appl. Phys.

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Abstract. Macroscopic hysteresis and local Barkhausen noise techniques were used for the comprehensive magnetic investigation of structural low-carbon steel subjected to uniaxial plastic tension. Scattering of the measured magnetic parameters was substantial within the Lüders band region with stabilization at higher strains. Compressive residual stresses in the deformation direction formed a hard magnetization axis with intriguing two-phase remagnetization. The magnetic parameters had highest sensitivity to strain in this direction. They changed as cos 2 with rotation to the perpendicular easy magnetization axis, where the magnetic sensitivity was lowest. The relation between the deformed steel microstructure (dislocation and residual stress patterns) and the obtained magnetic behaviour is interpreted. Applicability of the examined techniques for the non-destructive characterization of steel degradation is discussed.

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“…However, contrary to the previously 144 published statement [8,11], the extremes of the BN parameters are found to deviate …”

Section: Bmax Brcontrasting

confidence: 54%

mentioning

confidence: 99%

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Magnetic anisotropy of plastically deformed low-carbon steel

Stupakov

Uchimoto

Takagi

2010

J. Phys. D: Appl. Phys.

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“…After 1960, because of the rapid development of electronic measurement techniques, many researchers have paid more profound investigation to the Barkhausen effect, and exploited quite a few fields. Krause et al(1996). In that experiment, there were two methods: one was intensity spectrum of noise output, namely time domain analysis; the other was based on the amplitude domain technique, measuring the pulse distribution and productivity.…”

Section: Theory and Methods Of Magnetic Barkhausen Noisementioning

confidence: 99%

Magnetic Nondestructive Testing Techniques of Constructional Steel

Xiong

Zhao

Yan

et al. 2016

MATEC Web of Conferences

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Steel is a kind of ferromagnetic material, which is extensively applied in such fields as buildings, bridges, railways, machines and lifeline engineering etc. Those engineering structures built of constructional steel will unavoidably experience some damages during their service lifetime, thus which will influence the distribution regularity of internal forces in structures, result in over-stresses, cause the local failure of structures, and even lead to collapse of the whole structure. Therefore, it is a pressing topic to study how to directly evaluate the real-time stressed states of structural members, damages and steel characteristics in present structural health monitoring and diagnosing fields. And the achievements of this research will be of theoretical significance and of application value of engineering. This paper summarizes varieties of new magnetic nondestructive testing techniques used in constructional steel, respectively investigates the testing principles, characteristics and application for the magnetic Barkhausen noise technique, magnetic acoustic emission technique, magnetic flux leakage technique, magnetic memory technique and magnetic absorption technique, and points out the problems present in the application of these new techniques to actual testing and the further research objective.

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“…BN is commonly observed by using a pick-up coil and an amplifier ( Figure 6). Magnetoelastic testing using BN measurements have been used primarily in the nondestructive testing of pipeline steel (Tiitto, 1991;Jagadish et al, 1990;Krause et al, 1995;Mandel et al, 1996). This method of nondestructive testing has not been tried on earth materials, although the Barkhausen effect has been observed in rocks.…”

Section: Domainsmentioning

confidence: 99%

Rockburst Research Applied to Nuclear Event Discrimination

Hoffman¹,

Cook²,

Baker³

et al. 1999

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Public reporting burden for this collection of information is estimated to average 1 hour per respo gathering and maintaining the data needed, and completing and reviewing the collection of inforr-* collection of information, including suggestions for reducing this burden, to Washington Headqua Davis Highway, Suite 1204, Arlington, VA 22202-4302, and Rockbursts produce seismic signals that are similar to those associated with near surface earthquakes and explosions. Some o: the methods developed for source mechanism studies also encompass imaging techniques appropriate for nuclear event verification, and, as a result, have implications for the Comprehensive Test Ban Treaty (CTBT). Past experiments have demonstrated a clear relationship between Barkhausen Noise (BN) and stress in pipeline steel samples. Stress can affect the nature of the pinning sites at domain boundaries which in turn plays a role in the way that domain walls move and cause BN pulses. We have conducted experiments to detect a relationship between BN and stress in magnetite-rich rocks. These experiments were performed by applying uniaxial loading from 4500N to 55000N to cylindrical core samples of magnetite-rich rocks obtained from the Stillwater Complex in Montana. A pick-up coil was used to detect the BN pulses and an electromagnet was used to magnetize the samples. BN pulses were recorded during a specified time interval for each increment of loading. The pick-up coil was positioned to be near magnetite-rich regions of the sample. We have observed a linear increase in the number of BN pulses with increased loading. Ongoing research is focused on refining the experimental procedure to increase the bandwidth of recording and eliminate possible sources of noise in the experiments. The results of this study might help us to understand the nature of the remagnetization that often accompanies large-scale tectonic events. Moreover, this study could lead to a method of nondestructive testing to determine state of stress at mine walls. MQOQttO I5(j SUMMARY The basis for this research is that rockbursts produce seismic signals that are similar to those associated with near surface earthquakes and explosions. A complete understanding of source mechanisms is necessary for the correct identification of these events. Some of the methods developed for source mechanism studies also encompass imaging techniques appropriate for nuclear event verification, and, as a result, have implications for the Comprehensive Test Ban Treaty (CTBT). SUBJECT TERMSPCI/Atlantic Scientific INSAR software was purchased last fall for elevation change detection at a rockburst site using radar interferometry. We have been familiarizing ourselves with this software and radar remote sensing. Images have recently been acquired that cover the site of a large rockburst.The air wave can interfere with the rock wave in Ground Penetrating Radar (GPR) transillumination experiments making it difficult to pick the rock wave first arrivals in mines. This was particularly a problem at small t...

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Investigation of the stress-dependent magnetic easy axis in steel using magnetic Barkhausen noise

Cited by 95 publications

References 22 publications

Magnetic anisotropy of plastically deformed low-carbon steel

Magnetic anisotropy of plastically deformed low-carbon steel

Magnetic Nondestructive Testing Techniques of Constructional Steel

Rockburst Research Applied to Nuclear Event Discrimination

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