Barkhausen effect in ground steels

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

“…Literature survey reports broad utilization of the MBN technique in measuring residual stresses [20][21][22][23][24][25][26][27]. The MBN method is a fast, reliable, economic method, and it is appropriate either for laboratory of for industrial scale.…”

Micromagnetic Analysis of Thermally Induced Influences on Surface Integrity Using the Burning Limit Approach

“…If the surface and subsurface layers of a workpiece exhibit reduced hardness or tensile residual stresses due to the thermal damage, the level of the BN signal increases [4,14]. More than 20 years ago the suitability of the method for grinding burn testing was shown [4,15] In the past, individual micromagnetic parameters (in particular the BN amplitude) for the assessment of ground workpieces, have often been tested for correlation with the residual stress state, hardness, dislocation density, and chemical homogeneity of the microstructure [2,5,12,13].…”

A model for the influence of microstructural defects on magnetic Barkhausen noise in plain steels

“…In MBN experiments, the signals obtained by the MBN sensor are filtered to eliminate the harmonics of the applied magnetic field presented in these signals [1][2][3][4][5][6][7][8][9][10][11][12][13]. In this process a band pass filter was used, as is described in Section 2.…”

“…In order to study the influence of the microstructural features on MBN, several phenomenological models have been developed [4,12,13]. The most consistent of these models is the one proposed by Kameda and Ranjan [4], which contains parameters related to the mean free path of the domain walls and to the nucleation and annihilation of domains.…”