Laser & Optoelectronics Progress, Volume. 59, Issue 19, 1914007(2022)
Prediction of Weld Forming Size for Laser Welded Titanium Alloy T-joint Based on Regression Analysis
The fiber laser was used to weld the TA15 titanium alloy skin grid structure, and the coaxial high-speed camera monitoring scheme was used to collect images and extract features of the molten pool morphology under different welding parameters. The results show that the segmentation extraction method of molten pool edge based on brightness features can solve the problem of uneven brightness before and after the molten pool image, and extract accurate molten pool edge information. The molten pool width and drag angle have a strong correlation with the weld joint width, and the length, width, and drag angle of the molten pool have a strong correlation with the weld penetration. At the same time, a regression analysis model of welding process parameters and weld formation is established, and the weld forming size is predicted. The average prediction errors of the weld joint width and weld penetration are 0.14 mm and 0.10 mm, respectively.
Get Citation
Copy Citation Text
Xue Wen, Honghui Wang, Dehua Fan, Zhenglong Lei, Siyuan Bi, Hengtong Guo. Prediction of Weld Forming Size for Laser Welded Titanium Alloy T-joint Based on Regression Analysis[J]. Laser & Optoelectronics Progress, 2022, 59(19): 1914007
Category: Lasers and Laser Optics
Received: Jan. 7, 2022
Accepted: Feb. 16, 2022
Published Online: Sep. 19, 2022
The Author Email: Lei Zhenglong (leizhenglong@hit.edu.cn)