Results 1 to 10 of about 2,308 (163)

Elucidation of laser welding phenomena and factors affecting weld penetration and welding defects

Physics Procedia, 2010
AbstractThe behavior and effect of a plasma plume on the weld penetration are greatly different between CO2 laser welding and YAG, disk or fiber laser welding. The effects of the power and the power density on the weld penetration are elucidated. Spattering leading to the formation of underfilled weld beads is controlled by inclining the laser beam ...
Yousuke Kawahito
exaly   +2 more sources

Monitoring of butt weld penetration based on infrared sensing and improved histograms of oriented gradients

Journal of Materials Research and Technology, 2023
In the process of butt welding, achieving real-time monitoring of butt weld penetration is of great significance for improving forming quality. Currently, weld penetration detection methods based on weld pool vision are easily disturbed by arc lights. In
Rongwei Yu, Yong Huang, Yong Peng, Kehong Wang   +3 more
doaj   +1 more source

Study on the Oscillating Phenomenon of Welding Pool with Different Penetration States in Short-Circuiting GMAW

Applied Sciences, 2023
The oscillating phenomenon of the weld pool has a direct physical correspondence with its penetration state, which has broad application prospects in the monitoring of weld penetration states.
Haoxuan Qian, Tao Chen, Songbai Xue
doaj   +1 more source

Prediction of variable-groove weld penetration using texture features of infrared thermal images and machine learning methods

Journal of Materials Research and Technology, 2023
When workpieces with varying grooves are welded, changes in the groove angle of the base metal can affect the butt weld penetration, thus affecting the final weld forming quality.
Rongwei Yu, Shun Guo, Yong Huang, Huajun Dai, Shubiao Qiu, Yong Peng, Kehong Wang   +6 more
doaj   +1 more source

Research on the Formation, Microstructure, and Properties of 304 Stainless Steel AC-DC Hybrid TIG Welding

Metals, 2023
In this work, a new welding method, AC-DC hybrid TIG welding, is used to weld 304 stainless steel. Research on the formation, microstructure, and properties of 304 stainless-steel welded joints are studied by using optical microscope and microhardness ...
Ying Ye, Bairu Yang, Yonghui Yang, Zihan Pan, Chao Chen, Xinlong Zhang   +5 more
doaj   +1 more source

Prediction of Penetration in Welded Joints by Welding Conditions (Part I)

Journal of the Japan Welding Society, 1955
Penetrations of bead-on specimens (200×200 mm, 6, 10, 15 and 20 mm thick) of plain carbon steel were measured for, various welding conditions. (see Fig. 1 and Table 1).Penetration and bead width were presumed by theoretical calculation of temperature distribution near the weld. (see Fig. 2). These are shown-in Figs.
M. Watanabe, K. Satoh
  +6 more sources

Study on Penetration Sensing Method Based on Pool Oscillation and Arc Voltage during Pulsed GMAW

Applied Sciences, 2020
The internal relations among the oscillation characteristics of the weld pool, the voltage signal curve and the penetration status of the weld joint in pulsed gas metal arc welding were investigated by using high-speed camera and image analysis system to
Tao Chen, Songbai Xue, Peizhuo Zhai, Bo Wang, Weimin Long   +4 more
doaj   +1 more source

Algorithms for Weld Depth Measurement in Laser Welding of Copper with Scanning Optical Coherence Tomography

Micromachines, 2022
In-process monitoring of weld penetration depth is possible with optical coherence tomography (OCT). The weld depth can be identified with OCT by statistical signal processing of the raw OCT signal and keyhole mapping. This approach is only applicable to
Thomas Will, Eduardo Massieu Garcia, Claudio Hoelbling, Christian Goth, Michael Schmidt   +4 more
doaj   +1 more source

Real-Time Prediction of Welding Penetration Mode and Depth Based on Visual Characteristics of Weld Pool in GMAW Process

IEEE Access, 2020
The penetration depth of welding seam can reflect welding quality fundamentally, during the gas metal arc welding (GMAW) process, the penetration depth of welding seam fluctuates over time.
Rongwei Yu, Jing Han, Zhuang Zhao, Lianfa Bai   +3 more
doaj   +1 more source

Effects of Process Parameters on the Bead Shape in the Tandem Gas Metal Arc Welding of Aluminum 5083-O Alloy

Applied Sciences, 2023
In gas metal arc welding (GMAW), the weld bead shape is an important factor that is directly related to the weld quality of welded joints. This study investigates the effects of process parameters, including welding speed (WS) and leading and trailing ...
Gwang-Gook Kim, Taehoon Kang, Dong-Yoon Kim, Young-Min Kim, Jiyoung Yu, Junhong Park   +5 more
doaj   +1 more source