Results 101 to 110 of about 11,627 (227)

Research Status and Progress of All-Position Narrow-Gap GMAW for Pipelines

Applied Sciences
During the all-position narrow-gap welding process of pipelines, welding defects tend to occur in non-flat welding positions, constraining the quality and efficiency of pipeline construction.
Wenji Liu, Qing Li, Jianfeng Yue, Peng Zhu, Bing Li   +4 more
doaj   +1 more source

Numerical modelling of hybrid arc/laser welding: a coupled approach to weld bead formation and residual stresses

, 2013
International audienceThe joining of high thickness steel sheets by means of hybrid Laser/GMAW welding processes is studied in this paper. A three dimensional finite element model has been developed to simulate this process.
Bellet, Michel, Desmaison, Olivier, Guillemot, Gildas   +2 more
core   +1 more source

Effects of Shielding Gas Composition on Process Stability and Arc Behavior of Laser-Cable-Type Welding Wire Arc Hybrid Welding

Metals
This study systematically investigates the behavior of droplet transfer and the characteristics of weld morphology in laser-cable-type welding wire (CWW) arc hybrid welding under varying Ar-CO2 shielding gas compositions, utilizing AH36 shipbuilding ...
Zhidong Yang, Kun Wang, Yang He, Yinhui Rao, Xiaojie Yang, Peng Zhao, Chenfu Fang, Yuntao Chen   +7 more
doaj   +1 more source

Investigating the Influence Mechanism of Different Shielding Gas Types on Arc Characteristics and Weld Quality in TA2 Laser–Arc Hybrid Welding

Metals
The effective welding of a 6 mm thick TA2 pure titanium medium-thickness plate was achieved by laser–arc hybrid welding (LAHW) with helium–argon mixed shielding gas.
Haojie Zhang, Mingyao Shen, Xueqin Tian, Qunli Zhang, Zhijun Chen, Jianhua Yao   +5 more
doaj   +1 more source

Modelling of the bead formation during multi pass hybrid laser/gas metal arc welding

, 2012
International audienceA three dimensional finite element model has been developed to simulate weld bead formation in multi pass hybrid laser/gas metal arc welding.
Bellet, Michel, Desmaison, Olivier, Guillemot, Gildas   +2 more
core   +1 more source

To the issue of crack formation in laser-hybrid welding [PDF]

, 2015
While the laser-hybrid welding of steel with a thickness of 18 mm, the main problems are the cracks, which often appear in the centre of the weld seam.
Ivanov, M. A., Иванов, М. А.
core  

A multi-physics level set approach for the simulation of the hybrid Laser/GMAW process

, 2012
International audienceA new hybrid welding technique has recently been developed in order to answer to the industry needs to gather high thickness steel sheets.
Bellet, Michel, Desmaison, Olivier, Guillemot, Gildas   +2 more
core   +1 more source

Index to NASA Tech Briefs, 1975 [PDF]

, 1976
This index contains abstracts and four indexes--subject, personal author, originating Center, and Tech Brief number--for 1975 Tech ...

core   +1 more source

Microstructure evolution and porosity suppression in high-power laser-arc hybrid welded thick aluminum alloy T-joints through high-frequency beam oscillation

Journal of Materials Research and Technology
The mechanical properties of aluminum alloy T-joints are critically influenced by the microstructural characteristics and porosity distribution. This study systematically investigated the effects of the laser oscillation frequency from 100 to 300 Hz on ...
Jiahui Zheng, Yunfei Meng, Yu Ke, Zhiqiang Zhou, Chao Ge, Zhenxing He, Chendong Shao, Fenggui Lu, Haizhou Li, Zongtao Zhu, Hui Chen   +10 more
doaj   +1 more source

The Morphology of Laser Arc Hybrid Welds

, 2014
This thesis is about formation of surface imperfections formed in welding when using the manufacturing methods of laser welding and laser arc hybrid welding. In hybrid welding a traditional arc welding source and a laser share the same melt pool, making the process even more complex.
openaire   +1 more source