Results 11 to 20 of about 2,407 (262)

Recognition of DC01 Mild Steel Laser Welding Penetration Status Based on Photoelectric Signal and Neural Network

Metals, 2023
Achieving online inspection and recognition of laser welding quality is essential for intelligent industrial manufacturing. The weld penetration status is an important indicator for assessing the welding quality, and the optical signal is the most common
Yue Niu, Perry P. Gao, Xiangdong Gao
doaj   +1 more source

Welding Quality Detection for Variable Groove Weldments Based on Infrared Sensor and Artificial Neural Network

Metals, 2022
Connecting a variable groove weldment is always challenging, and it is necessary to monitor the course of the work and optimize the welding process parameters in real time to ensure the final welding forming quality.
Rongwei Yu, Yong Huang, Shubiao Qiu, Yong Peng, Kehong Wang   +4 more
doaj   +1 more source

Collaborative and Quantitative Prediction for Reinforcement and Penetration Depth of Weld Bead Based on Molten Pool Image and Deep Residual Network

IEEE Access, 2020
Weld quality is generally determined by reinforcement and penetration depth of weld bead in arc welding. Penetration depth reflects weld strength and reinforcement reflects weld shape. What's more, there is a strong coupling between them, therefore it is
Jun Lu, Yumin Shi, Lianfa Bai, Zhuang Zhao, Jing Han   +4 more
doaj   +1 more source

Penetration Recognition in GTAW Welding Based on Time and Spectrum Images of Arc Sound Using Deep Learning Method

Metals, 2022
The weld penetration rate is an important evaluation criterion for welding quality. However, it is difficult to identify the weld penetration state during GTAW welding process.
Jiazhou Wu, Jiawen Shi, Yanfeng Gao, Shan Gai   +3 more
doaj   +1 more source

Minor element effect on weld penetration.

QUARTERLY JOURNAL OF THE JAPAN WELDING SOCIETY, 1990
The penetration in GTA welding is affected by the convective fluid flow in molten pool and the fluid flow is strongly influenced by the minor elements such as sulfur, oxygen and chlorine in base metal. The purpose of this work is to make clear the mechanism of the minor element effect on the fluid flow in GTA welding.In the first, the influence of the ...
T Ohji, A Miyake, M Tamura, H Inoue, K Nishiguchi   +4 more
openaire   +2 more sources

Quasi-Continuous Wave Pulsed Laser Welding of Copper Lap Joints Using Spatial Beam Oscillation

Micromachines, 2022
Laser beam welding of copper (Cu) using near-infrared radiation is extremely challenging due to its high thermal conductivity and large laser reflectivity.
Amirhossein Sadeghian, Subhasisa Nath, Yuze Huang, Ranveer S. Matharu, Noppawee Wadee, Nicolas Pembrey, David G. Waugh   +6 more
doaj   +1 more source

Penetration Estimation of GMA Backing Welding Based on Weld Pool Geometry Parameters

Chinese Journal of Mechanical Engineering, 2019
Penetration estimation is a prerequisite of the automation of backing welding based on vision sensing technology. However, the arc interference in welding process leads to the difficulties of extracting the weld pool characteristic information, which ...
Junfen Huang, Long Xue, Jiqiang Huang, Yong Zou, Ke Ma   +4 more
doaj   +1 more source

Study on fatigue property of the rib-to-deck welded joint in orthotropic steel bridge deck, considering the weld penetration rate [PDF]

Railway Sciences
PurposeThe U-shaped rib-to-deck welded joint in orthotropic steel decks (OSDs) is prone to multiple fatigue cracks, which threaten structural integrity. Current design codes worldwide stipulate a minimum weld penetration rate of 75% or 80%, but practical
Xiaochen Ju, Zhibin Zeng, Shen Rao
doaj   +1 more source

Joining 30 mm Thick Shipbuilding Steel Plates EH36 Using a Process Combination of Hybrid Laser Arc Welding and Submerged Arc Welding

Journal of Manufacturing and Materials Processing, 2022
This article presents a cost-effective and reliable method for welding 30 mm thick sheets of shipbuilding steel EH36. The method proposes to perform butt welding in a two-run technique using hybrid laser arc welding (HLAW) and submerged arc welding (SAW).
Sergej Gook, Ahmet Midik, Max Biegler, Andrey Gumenyuk, Michael Rethmeier   +4 more
doaj   +1 more source

Effect of narrow groove MAG welding oscillation parameters on weld formation

Journal of Hebei University of Science and Technology, 2017
In order to solve the problem of narrow groove wall fusion, improving the weld formation, the welding test of different oscillation width and frequency is carried out by adopting the narrow high-speed swing MAG welding torch.
Yu LUO, Zhongliang ZHANG, Canfeng ZHOU, Chenggong YANG, Wei ZHOU   +4 more
doaj   +1 more source