Visible to the public Nondestructive evaluation of residual stress through acoustically stimulated electromagnetic response in welded steel

TitleNondestructive evaluation of residual stress through acoustically stimulated electromagnetic response in welded steel
Publication TypeConference Paper
Year of Publication2019
AuthorsSuzuki, Yuhei, Ichikawa, Yuichi, Yamada, Hisato, Ikushima, Kenji
Conference Name2019 IEEE International Ultrasonics Symposium (IUS)
Date Publishedoct
Keywordsacoustically stimulated electromagnetic method, applied tensile stress, ASEM, coercive force, coercivity, compositionality, cracking, cracks, electromagnetic response, Face, Fatigue, ferromagnetic materials, internal stresses, local magnetic hysteresis properties, Magnetic flux, magnetic hysteresis, magnetic properties, Magnetomechanical effects, nondestructive evaluation, plates (structures), pubcrawl, remanence, remanent magnetization signal, residual stress, Residual stresses, Resiliency, Steel, steel components, tensile residual stresses, tensile strength, Tensile stress, ultrasonic, ultrasonic materials testing, ultrasonic waves, welded steel plate, Welding
AbstractTensile residual stresses combined with an applied tensile stress can reduce the reliability of steel components. Nondestructive evaluation of residual stress is thus important to avoid unintended fatigue or cracking. Because magnetic hysteresis properties of ferromagnetic materials are sensitive to stress, nondestructive evaluation of residual stress through magnetic properties can be expected. The spatial mapping of local magnetic hysteresis properties becomes possible by using the acoustically stimulated electromagnetic (ASEM) method and the tensile stress dependence of the hysteresis properties has been investigated in steel. It is found that the coercivity Hc and the remanent magnetization signal Vr monotonically decrease with increasing the tensile stress. In this work, we verified the detection of residual stresses through the ASEM response in a welded steel plate. Tensile stresses are intentionally introduced on the opposite side of the partially welded face by controlling welding temperatures. We found that Hc and Vr clearly decrease in the welded region, suggesting that the presence of tensile residual stresses is well detected by the hysteresis parameters.
Citation Keysuzuki_nondestructive_2019