Open AccessResearch on quality inspection model of spot welding of equal-thickness three-layer sheets based on ultrasonic A-scan
Author(s) -
Yali Liu,
Yingtian Pan,
Haishan Chen,
Wenzhe Wang,
Tong An,
Xu Chen
Publication year - 2022
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 - 10.1088/1742-6596/2246/1/012083
Subject(s) - spot welding , welding , nondestructive testing , ultrasonic sensor , ultrasonic testing , finite element method , correctness , layer (electronics) , materials science , structural engineering , mechanical engineering , acoustics , engineering , computer science , composite material , algorithm , medicine , physics , radiology
To judge the spot welding quality automatically and effectively, this thesis uses the conventional ultrasonic A-scanning to study the mathematical model of nugget diameter for equal-thickness three-layer sheets. The finite element simulation model of the spot welding ultrasonic nondestructive (NDT) testing for equal-thickness three-layer low carbon sheets is established. The calculated values of the nugget diameter between different laminates are studied. Finally, the experiment of the spot welding ultrasonic nondestructive testing is carried out. This thesis verifies the correctness of the finite element simulation and the mathematical calculation model. The research results are of great significance to ultrasonic automatic inspection technology of spot welding.