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

Evaluation of surface decarburization depth by magnetic Barkhausen noise technique

“…1) [1,7]. The sand blasted series shows an additional broad peak at negative field region, which is known to be ascribed to compressive residual stresses [15][16][17]. The second peak corresponding to the ferrite layer is also shifted to higher fields as compared with the two other sample series.…”

“…2(a)) [15][16][17]. This classical parameter displays good sensitivity to the decarburized layer depth of up to 170 mm.…”

Multi-parameter Evaluation of Magnetic Barkhausen Noise in Carbon Steel

“…Therefore, the MBN technique has found applications in evaluation of residual stress state in weldments [3,4], detection of grinding burns [5] and assessment of the steel condition within structures such as oil and gas pipelines [6] and electric motor lamination [7]. Nevertheless, stress evaluation using MBN is complicated due to the superposition of the effects of various microstructural and physical features on the stress-response of MBN signal [8][9][10]. Therefore, there is interest in developing methods and experimental procedures to separate the influence of these multiple variables on MBN [8].…”

“…Earlier papers investigated the MBN response to simultaneous variations of carbon content and plastic deformation [9],tensile stress and grain size [15], and grain size and carbon content [16]. The influence of sample thickness on MBN measurement results was examined in structural steel [17] and electrical steel laminations [18].…”

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

“…A interação entre o sinal RMB e defeitos internos do material, bem como o teor de carbono em aços e mostrado em (PÉREZ-BENITEZ et al, 2005;PADOVESE, 2010). A técnica do RMB também foi utilizada em conjunto com outras técnicas como ultrassom e correntes parasitas para a detecção de fases deletérias em aços inoxidáveis duplex (NORMANDO et al, 2010).…”