A study of plastic deformation around a defect using the magnetic Barkhausen noise in ASTM 36 steel

An accurate evaluation of the residual stress of welded electrical steels with magnetic Barkhausen noise

“…The MBN signal contains information which is closely related to the microstructure [1][2][3][4][5][6][7][8][9][10][11][12][13][14] of an examined ferromagnetic material. Thus, any change in grains configuration, due to the presence of stresses [15][16][17][18][19] or of lattice distortions, results in rearrangement of the magnetic domains' configuration.…”

Study of the influence of simultaneous variation of magnetic material microstructural features on domain wall dynamics

“…Thus, the MBN signal contains information on a wide variety of sample microstructural and micromagnetic properties. This fact stimulates the development of a number of MBN-based non-destructive applications for inspection of features such as applied tension [3] and plastic deformation [2,3,5], grain size [4] and carbon content [6,7] in magnetic materials.…”

“…Until now, the more common approach to MBN vs microstructural-stress-strain features has been fixing all the material features except for one, and establishing the dependence of the MBN signal on this nonfixed parameter. These approaches have shown good results, as the abundant literature on MBN non-destructive inspection demonstrates [1][2][3][4][5][6][7][8][9][10]. However, there are several situations, in practical applications, where variations of more than one of these features occur, such as in welding inspection for example.…”

“…Furthermore, the dependence of the MBN signal on plastic deformation was also studied in several works [2,5,8,9,12,16]. However, the influence of very low plastic deformation in the MBN signal has not been sufficiently investigated [12] so far.…”

Técnica de escaneamento contínuo com Ruído Magnético de Barkhausen para chapas aços carbono

“…Os sinais RMB nessas regiões têm maior probabilidade de serem mais intensos do que os provenientes de domínios magnéticos de menor tamanho, dentro dos grãos (PEREZ-BENITEZ et al, 2008).…”