Magnetic Barkhausen Noise and hysteresis loop in commercial carbon steel: influence of applied tensile stress and grain size

Anglada-Rivera, J.; Padovese, Linilson Rodrigues; Capó-Sánchez, J.

doi:10.1016/s0304-8853(01)00066-x

Cited by 130 publications

(55 citation statements)

References 28 publications

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“…Previous studies [115,116] on steels have shown that the maximum amplitude of the MBN signal decreases with the reduction in grain size however, it increases with increasing misorientation angles at the grain boundary. From a similar viewpoint, it is almost impossible to use the MBN to assess residual stresses in weldments containing heat-affected zones (HAZ), since HAZ have very rapid microstructural gradients.…”

Section: Barkhausen Noise Methodsmentioning

confidence: 83%

Methods of measuring residual stresses in components

et al. 2012

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Residual stresses occur in many manufactured structures and components. Large number of investigations have been carried out to study this phenomenon and its effect on the mechanical characteristics of these components.Over the years, different methods have been developed to measure residual stress for different types of components in order to obtain reliable assessment. The various specific methods have evolved over several decades and their practical applications have greatly benefited from the development of complementary technologies, notably in material cutting, full-field deformation measurement techniques, numerical methods and computing power. These complementary technologies have stimulated advances not only in measurement accuracy and reliability, but also in range of application; much greater detail in residual stresses measurement is now available. This paper aims to classify the different residual stresses measurement methods and to provide an overview of some of the recent advances in this area to help researchers on selecting their techniques among destructive, semi destructive and non destructive techniques depends on their application and the availabilities of those techniques. For each method scope, physical limitation, advantages and disadvantages are summarized. In the end this paper indicates some promising directions for future developments.

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Section: Barkhausen Noise Methodsmentioning

confidence: 83%

Methods of measuring residual stresses in components

et al. 2012

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“…O RMB depende dos parâmetros empregados para a magnetização, como a freqüência , e a intensidade de magnetização [7,8] mas também depende das características do material como o tamanho de grão , o teor de carbono [13,14] e o estado de tensões [15,16].…”

Section: O Ruído Magnético De Barkhausen (Rmb)unclassified

Avaliação de soldagem de aço estrutural através do Ruído Magnético de Barkhausen

Serna-Giraldo

Padovese

2010

Soldag. insp.

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Resumo Este trabalho apresenta resultados de avaliação de juntas soldadas de aço estrutural ASTM A36 por meio do Ruído Magnético de Barkhausen (RMB). Palavras-chave: Ruído Magnético de Barkhausen (RMB). Soldagem de aços Carbono. Ensaios Não Destrutivos Magnéticos. Abstract: This paper shows results for the evaluation of ASTM A36 carbon steel welded joints by Magnetic Barkhausen Noise (MBN). V-groove shape welded samples were made in a 6 mm thickness plates, with one-pass and two-pass. Microstructural and microhardness characterization were made on a transversal section of welds. In the surface was made measurement of MBN. The signal of MBN

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“…Several authors [11][12][13][14][15] have studied the direct magnetomechanical problem on idealized flat samples, reproducing Villari's experiment for different steel grades. Some empirical relationships can also be found in the pioneering work by Bozorth [16].…”

Section: Introductionmentioning

confidence: 73%

Discussion of Derivability of Local Residual Stress Level from Magnetic Stray Field Measurement

Augustyniak

Usarek

2015

J Nondestruct Eval

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The NDT procedure dubbed 'metal magnetic memory' method and the related ISO 24497 standard has found wide industrial acceptance in some countries, mainly in Russia and China. The method has been claimed by some researchers (Roskosz and Bieniek in NDT&E Int 45:55-62, 2012; Wilson et al. in Sens Actuators A 135:381-387, 2007) as having potential for quantitative determination of local residual stress state in engineering structures, at least for some steel grades. This work presents a critical reexamination of a previous important study by Roskosz and Bieniek, who claimed to have found a direct relationship between local residual equivalent stress levels ranging from 0 to 50 MPa, and the stray field gradients in T/P24 steel sample placed in the Earth's ambient magnetic field. We reconstruct their experiment in a magnetic finite element simulation, computing stray magnetic field and its tangential gradients along the axis of the sample. Different combinations of remanent induction and relative magnetic permeability levels have been modeled, and the influence of geometrical discontinuity is quantified. In order to validate magnetic finite element methodology, a new experiment is presented, along with its numerical counterpart. The magnetic finite element method allowed to obtain a good quantitative correlation with well-controlled stray field measurements. It is demonstrated, that the residual stress level of order of 50 MPa is not the only factor, on which the stray field measurement depends. The geometrical discontinuity and the remanent induction contribute to a higher extent to the field amplitudes. Consequently we prove, that a bidirectional correlation between B Marek Augustyniak maugustyniak@mif.pg.gda.pl 1 Gdansk University of Technology, 80233 Gdansk, Poland 2 DES ART Ltd, 81366 Gdynia, Poland the magnetic field gradient and local stress levels cannot be determined because of at least three concurrent inseparable factors on which the measured stray field and its spatial gradient depends.

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Magnetic Barkhausen Noise and hysteresis loop in commercial carbon steel: influence of applied tensile stress and grain size

Cited by 130 publications

References 28 publications

Methods of measuring residual stresses in components

Methods of measuring residual stresses in components

Avaliação de soldagem de aço estrutural através do Ruído Magnético de Barkhausen

Discussion of Derivability of Local Residual Stress Level from Magnetic Stray Field Measurement

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