On the stress vs. Barkhausen noise relation in a duplex stainless steel

Lindgren, Mari; Lepistö, Toivo

doi:10.1016/j.ndteint.2003.11.005

Cited by 22 publications

(15 citation statements)

References 34 publications

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“…There is a significant amount of experimental articles aiming at elucidating the nature of MBN [50][51][52]. The micromagnetic modelling approaches to MBN representation were recently reviewed by Zapperi and Durin [53], and some results from stochastic (Monte Carlo) models were published as well [54].…”

Section: Mfl(f): Frequency Effectsmentioning

confidence: 99%

“…The second consists in coexistence of several influence factors of a comparable impact on the measured signal. Relevant examples are the confounding conductivity and permeability factors in EC, or superposition of magnetic anisotropy and stress state in MBN [50]. The third problem is the complexity of any in-situ measurements, involving uncertainties higher than those associated with laboratory setting.…”

Section: Solutions Of Inverse Problemsmentioning

confidence: 99%

See 1 more Smart Citation

Finite Element Method Applied in Electromagnetic NDTE: A Review

Augustyniak

Usarek

2016

J Nondestruct Eval

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The paper contains an original comprehensive review of finite element analysis (FEA) applied by researchers to calibrate and improve existing and developing electromagnetic non-destructive testing and evaluation techniques, including but not limited to magnetic flux leakage (MFL), eddy current testing, electromagnetic-acoustic transducers (EMATs). Premium is put on the detection and modelling of magnetic field, as the vast majority of ENDT involves magnetic induction, either as a primary variable MFL or a complementary phenomenon (EC, EMATs). FEA is shown as a fit-for-purpose tool to design, understand and optimise ENDT systems, or a Reference for other modelling algorithms. The review intentionally omits the fundamentals of FEA and detailed principles of NDT. Strain-stress FEA applications in NDT, especially in ultrasonography and hole-drilling methodology, deserve as well a separate study.

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Section: Mfl(f): Frequency Effectsmentioning

confidence: 99%

Section: Solutions Of Inverse Problemsmentioning

confidence: 99%

Finite Element Method Applied in Electromagnetic NDTE: A Review

Augustyniak

Usarek

2016

J Nondestruct Eval

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“…As an example, the influence of the grain size on the MBN can be taken [7][8][9][10][11][12][13][14]. The situation is complicated by the fact that the MBN is measured in a wide frequency range, from frequencies below 0.1 Hz [15,16] up to above 100 Hz [17]. All this could explain why there * corresponding author; e-mail: jozef.pala@stuba.sk has not been found a clear correlation between the MBN and the quality of the grain oriented steels.…”

Section: Introductionmentioning

confidence: 99%

Investigation of Two-Stage Magnetic Barkhausen Noise Measurement Method at Power Line Frequency

Pal’a

Šoka

2016

Acta Phys. Pol. A

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The aim of the paper was to study the features of measurement of the magnetic Barkhausen noise by the new two-stage method in the high excitation frequency region (power line frequency). The magnetic Barkhausen noise was investigated on grain oriented Fe-3%Si steel subjected to different heat treatment. By application of an air coil on the output of the power amplifier we were able to linearize the excitation field. At the same time, the air coil suppressed the unwanted noise from the output of the power amplifier. We have found that the two-stage method is able to reveal a peak of the power spectrum even if it is located at low frequency, in contrast to the classical one-stage method. Further, we successfully applied a model of the power spectrum to the real magnetic Barkhausen noise obtained from the two-stage measurement.

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“…Finally, there are technically important materials, like duplex steels, which exhibit very significant magnetic anisotropy. Although some work has been started [9], detailed stress assessment procedure is still missing.…”

Section: Introductionmentioning

confidence: 99%

Determination of Magnetisation Conditions in a Double-Core Barkhausen Noise Measurement Set-up

Augustyniak

Piotrowski

et al. 2015

J Nondestruct Eval

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The magnetic Barkhausen effect is useful for assessing 1D and 2D stress states of ferromagnetic steel objects. However, its extension to technically important materials, such as duplex anisotropic steels, remains challenging. The determination of magnetisation inside the studied object and the electromagnet for various geometries, materials and magnetisation angles is a key issue. Three-dimensional, dynamic finite element analysis has been applied to reproduce time-varying fields inside and outside the prototype of a double-core magnetising setup. Useful relationships between characteristics (peak height and location) and magnetic induction vector have been proposed. The qualitative plausibility of simulation has been validated with an experiment and an analytic formula of skin depth. The angular anisotropy of magnetic Barkhausen effect (MBN) in an isotropic sample has been shown in simulation and confirmed experimentally. The numerical model, despite some limitations, seems to be an efficient tool for calibrating stress/MBN relationships at least in isotropic structural steel components.Keywords Electromagnetic finite element method · Dynamic magnetisation of bulk volume · Eddy currents · Magnetic Barkhausen effect (MBN) B Marek Augustyniak

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On the stress vs. Barkhausen noise relation in a duplex stainless steel

Cited by 22 publications

References 34 publications

Finite Element Method Applied in Electromagnetic NDTE: A Review

Finite Element Method Applied in Electromagnetic NDTE: A Review

Investigation of Two-Stage Magnetic Barkhausen Noise Measurement Method at Power Line Frequency

Determination of Magnetisation Conditions in a Double-Core Barkhausen Noise Measurement Set-up

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