Open AccessElectromagnetic ultrasonic measurement for welding residual stress detection - comparison between experiment with numerical simulation
Author(s) -
Wanjun Wang,
Jiajun Feng,
Shike Shi,
Linting Ouyang,
Feng Xu,
Zhiping Chen,
Yan He,
Guoli Li
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 - 10.1088/1742-6596/1303/1/012011
Subject(s) - electromagnetic acoustic transducer , residual stress , welding , ultrasonic sensor , computer simulation , acoustics , finite element method , materials science , stress (linguistics) , residual , transducer , structural engineering , ultrasonic testing , mechanics , engineering , composite material , physics , computer science , linguistics , philosophy , algorithm
In order to study the feasibility of electromagnetic ultrasonic method on the welding residual stress detection in Q345R plate, experiments and numerical simulations were carried out. The welding residual stress in the plate was firstly measured by electromagnetic acoustic transducer (EMAT). Then, finite element model of welding process was established to predict the residual stress in plate, who’s rationality was verified by blind hole experiment. At last, the average of numerical simulation results at five points along the plate’s thickness direction was compared with the electromagnetic ultrasonic measurement results. The results show that the residual stress measured by EMAT is consistent with those from numerical simulation in direction of the weld. However, in the vertical direction of the weld, the deviation between EMAT results and numerical simulation is relatively large near the weld fusion line. This phenomenon is also found in the junction between the heat affected zone and the base metal.