Open AccessMagnetic non-destructive testing of residual stresses in low carbon steels
Author(s) -
А. Н. Сташков,
А. П. Ничипурук,
V. G. Kuleev,
E. A. Schapova
Publication year - 2019
Publication title -
journal of physics. conference series
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.21
H-Index - 85
eISSN - 1742-6596
pISSN - 1742-6588
DOI - 10.1088/1742-6596/1389/1/012032
Subject(s) - residual stress , materials science , residual , nondestructive testing , texture (cosmology) , action (physics) , carbon steel , ultimate tensile strength , magnetic field , composite material , structural engineering , physics , corrosion , computer science , engineering , image (mathematics) , algorithm , quantum mechanics , artificial intelligence
A new calibration-free magnetic method and a measuring system for residual stresses monitoring in low carbon steels have been developed. The method is based on the fact that during the action of compressive stresses in the material an “easy plane” magnetic texture appears. Magnetic texture affects the processes of magnetization reversal of the testing object in such a way that two or three maxima on the curves of differential μ d (H) or reversible μ rev (H) magnetic permeabilities appear. The fields of the maxima are associated with the magnetoelastic field and residual stresses. To increase the reliability of testing results and simplify the evaluation of residual stresses in testing objects, it was proposed to use the method of subtracting experimental μ d (H) curves measured in the zones of action of compressive stresses and in the object under test without stresses. The method can also be used to estimate residual tensile stresses that are the most dangerous for steel structures.