Theory of ferromagnetic hysteresis: evaluation of stress from hysteresis curves

Garikepati, P.; Chang, Tieyan; Jiles, David

doi:10.1109/20.92289

Cited by 51 publications

(22 citation statements)

References 3 publications

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“…Similar behaviour was also observed with variously ground carburised samples with different residual stresses. This phenomenon was explained in terms of the fact that the BN peak amplitude versus stress behaviour corresponds to the relationship between stress and the slope of the anhysteretic magnetisation curve reported in [32]. Garikepati et al [32] suggested that there is a relationship between the slope of the anhysteretic magnetisation curve and stress.…”

Section: Bending Test Resultsmentioning

confidence: 91%

“…This phenomenon was explained in terms of the fact that the BN peak amplitude versus stress behaviour corresponds to the relationship between stress and the slope of the anhysteretic magnetisation curve reported in [32]. Garikepati et al [32] suggested that there is a relationship between the slope of the anhysteretic magnetisation curve and stress. Their [32] theory also suggests that the reciprocal value of the anhysteretic susceptibility behaves linearly with the applied stress and that the dependence is much stronger under tension.…”

Section: Bending Test Resultsmentioning

confidence: 91%

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Barkhausen noise characterisation during elastic bending and tensile-compression loading of case-hardened and tempered samples

Santa-aho

Vippola

Saarinen³

et al. 2012

J Mater Sci

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This study examined the Barkhausen noise (BN) response of carburising case-hardened steel with varying tempering stages. The test material was loaded in bending and in alternating loading. The aim of the study was to obtain relevant multiparameter BN data from different loading conditions and to investigate the effect of applied stress on the BN response. The test bar series was made from casehardened steel. Different tempering parameters were used to vary the surface hardness and the surface residual stresses of the studied series of test bars. In the bending tests, the samples were subjected to incrementally applied loading in the purely elastic deformation region. In addition, uniaxial stepwise loading with tensile and compressive stress was applied to selected samples simultaneously with the BN measurements. The BN measurements were performed under different loading conditions along with X-ray diffraction strain measurements in bending. The results revealed linear behaviour between the reciprocal root mean square value and the stress values obtained with strain gages and X-ray diffraction for the tempered samples.

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Section: Bending Test Resultsmentioning

confidence: 91%

Section: Bending Test Resultsmentioning

confidence: 91%

Barkhausen noise characterisation during elastic bending and tensile-compression loading of case-hardened and tempered samples

Santa-aho

Vippola

Saarinen³

et al. 2012

J Mater Sci

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“…Under compressive stress, the remanence decreased significantly and continuously. Garikepati et al 63 reported that in AISI 4130, the anhysteresitic differential permeability varied monotonically with stress between -300 MPa and +300 MPa.…”

Section: Effects Of Microstructure and Compositionmentioning

confidence: 99%

The magnetic detection of material properties

Devine

1992

JOM

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Because of the nature of ferromagnetism , the magnetic properties of a material can provide useful information about other material properties. Forexample, magnetic-hysteresis parameters and Barkhausen-eftect measurements areaftected by the microstructure of materials and by applied or residual stresses. Considerable work has shown that magnetic hysteresis and the Barkhausen effect can be used to investigate the condition of materials or components by nondestructive means. Such investigations can be carried out fairly easily under laboratory conditions; adapting the methods to in-service components is more problematic.

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“…This relationship can be derived theoretically, from an extension to the model of ferromagnetic hysteresis. 21 Note that in Figure 3(b), a linear relation may also be used to approximate the relationship between 1=hVi and stress in the plastic region.…”

Section: Measurement Of Barkhausen Signals As a Function Of Applmentioning

confidence: 99%

“…15,20 This relationship can be derived from an extension to the theory of ferromagnetic hysteresis. 21 The parameter hVi, being the yintercept of the frequency spectrum, represents an extrapolated mean value, which is expected to vary with stress, in a way similar to the peak envelope amplitude and RMS. We postulate that hVi follows the same relationship with stress.…”

Section: Theorymentioning

confidence: 99%

A model for the Barkhausen frequency spectrum as a function of applied stress

Kypris

Nlebedim

Jiles

2014

Journal of Applied Physics

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We derive a two parameter multi-exponential model to describe the frequency spectrum of Barkhausen noise in bulk steel under high excitation rates and applied tensile stress. We show how the amplitude and shape of the frequency spectrum depend on two directly measurable quantities, Barkhausen voltage and effective magnetic permeability, respectively, and how these change with stress. By incorporating frequency and depth dependence components into our model, we provide a framework for identifying stress variations along depth, which can be used for the purposes of non-destructive characterization. KeywordsBarkhausen effects, Domain walls, Emission spectra, Elasticity, Random Noise Disciplines Electromagnetics and Photonics CommentsThe following article appeared in Journal of Applied Physics 115 (2014) We derive a two parameter multi-exponential model to describe the frequency spectrum of Barkhausen noise in bulk steel under high excitation rates and applied tensile stress. We show how the amplitude and shape of the frequency spectrum depend on two directly measurable quantities, Barkhausen voltage and effective magnetic permeability, respectively, and how these change with stress. By incorporating frequency and depth dependence components into our model, we provide a framework for identifying stress variations along depth, which can be used for the purposes of nondestructive characterization. V C 2014 AIP Publishing LLC. [http://dx

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Theory of ferromagnetic hysteresis: evaluation of stress from hysteresis curves

Cited by 51 publications

References 3 publications

Barkhausen noise characterisation during elastic bending and tensile-compression loading of case-hardened and tempered samples

Barkhausen noise characterisation during elastic bending and tensile-compression loading of case-hardened and tempered samples

The magnetic detection of material properties

A model for the Barkhausen frequency spectrum as a function of applied stress

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