Article
Automation & Control Systems
Insa Henze, Peer Woizeschke
Summary: The presence of metal vapor affects the stability of arc in arc and hybrid welding. The composition of the metal vapor and the substrate material composition play a key role due to different ionization energies of the material elements. A special setup is used to investigate the influence of metal vapor on the behavior of a vertically oriented arc generated by a separate laser-induced vapor generation welding process. Experimental results show that the arc voltage increases under the presence of metal vapor, leading to a decrease in arc stability.
INTERNATIONAL JOURNAL OF ADVANCED MANUFACTURING TECHNOLOGY
(2023)
Article
Engineering, Manufacturing
Guangyu Chen, Stewart Williams, Jialuo Ding, Yipeng Wang, Wojciech Suder
Summary: A split anode calorimeter (SAC) was developed to measure the energy density of plasma transferred arc (PTA). The SAC was calibrated using a laser beam with a well-defined energy profile. The results confirmed the accuracy of the SAC method and its suitability for measuring the energy distribution of an electric arc. It was observed that the PTA energy profile was distorted when crossing over the split anode interface of the SAC, but this was corrected by adjusting the position of the ground wire. Analysis of the energy density profiles generated from current density and temperature distribution showed that the effective energy distribution is wider than the width of the arc column due to other energy transfer processes.
JOURNAL OF MANUFACTURING PROCESSES
(2022)
Article
Computer Science, Artificial Intelligence
Kaiser Asif, Lu Zhang, Sybil Derrible, J. Ernesto Indacochea, Didem Ozevin, Brian Ziebart
Summary: Weld evaluation is typically done after the welding process, which may result in material waste and lengthy repairs. Manual inspections are also often required even for automated welds. Therefore, there is a need for a real-time weld quality monitoring method with a decision-making strategy to improve productivity and automation in welding.
JOURNAL OF INTELLIGENT MANUFACTURING
(2022)
Article
Optics
Peikang Tao, Gaoyang Mi, Chunming Wang, Xiong Zhang
Summary: In this study, double-sided high-power fiber laser welding was used to weld ultra-high strength steel with a thickness of 20 mm. The welding parameters were optimized based on the behavior of molten metal and formation of the weld. The results showed that the optimized welding parameters resulted in uniform welds, with the microstructure predominantly being martensite. However, brittle fracture surfaces were formed at the top and middle of the welds.
OPTICS AND LASER TECHNOLOGY
(2022)
Article
Optics
Zongtao Zhu, Zheng Lei, Fei Li, Xinmeng Zhang, Yuanxing Li, Hui Chen
Summary: A study on a hybrid welding method (HTAAL) using a hollow tungsten arc coaxially coupled with a continuous-mode fiber laser was conducted. The process characteristics of HTAAL and the coupling mechanism of the laser and arc were investigated through bead-on-plate experiments. The results revealed a double-critical effect and a nonlinear change of penetration with increasing laser power. High-speed camera recordings of the molten pool and composite arc were analyzed, and spectral diagnostic data were used to calculate the electron density of the composite plasma. A numerical simulation model was established to understand the physical changes induced by HTAAL welding.
OPTICS AND LASER TECHNOLOGY
(2023)
Article
Materials Science, Multidisciplinary
Xiyang Liu, Yanbing Guo, Wang Zhang, Dongsheng Wu, Ruisheng Huang, Miaosen Yang, Binfeng Lu
Summary: This study used a nickel-based filler metal to fabricate a surfacing layer on a low-carbon steel substrate by a hybrid welding process with a rotating laser and arc. The surfacing layer's weld formation was studied using optical microscopic observation (OM). The microstructure of the layers was studied by using the scanning electron microscope (SEM), energy dispersive spectrum (EDS) and X-ray diffraction (XRD). The arc, metal transfer, molten pool flow behaviors, and U-I characteristics during hybrid laser arc welding (HLAW) were analyzed. The results show that a rotating laser improves the weld formation of gas metal arc welding (GMAW), and the behavior of the rotating laser-induced arc hybrid surfacing is of great significance for improving surfacing forming.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2022)
Article
Physics, Applied
Yotam Mazuz-Harpaz, Noa Kliss, Jonathan M. Wengrowicz, Jenya Papeer, Yechiel Frank
Summary: This study introduces a double-sided laser illumination scheme to enhance EUV emission and improve the power and efficiency of extreme-ultraviolet light sources. The experiments showed a significant increase in EUV emission with the addition of illumination on both sides, particularly for thinner targets. This method holds promise for further improvement in output power and energy efficiency of next-generation EUV light sources.
APPLIED PHYSICS LETTERS
(2023)
Article
Automation & Control Systems
ZuMing Liu, Fei Liu
Summary: Double-layer coaxial hybrid arcing technology is developed to improve the controllability of the weld pool thermal-force state in keyhole welding. The stable hybrid arcing process can be achieved when the outer arc current is lower than 30 A. This method shows promising results in improving the keyhole welding process window.
INTERNATIONAL JOURNAL OF ADVANCED MANUFACTURING TECHNOLOGY
(2023)
Article
Materials Science, Multidisciplinary
Linling Song, Shouzheng Wei, Wenji Rao, Zhiyong Li, Yingqiao Zhang
Summary: This study investigates the application of a double-sided cold arc MIG welding process in Ti-TA2/5A06Al dissimilar welding. The effects of welding parameters on the interfacial microstructures and joint tensile strength were analyzed, and optimized parameter ranges were determined. The results show that under proper parameters, a straight bonding interface can be achieved, and the ultimate tensile strength of the joint exceeds 320MPa.
JOURNAL OF MATERIALS ENGINEERING AND PERFORMANCE
(2022)
Article
Metallurgy & Metallurgical Engineering
Junting Xiang, Keigo Tanaka, Fiona F. Chen, Masaya Shigeta, Manabu Tanaka, Anthony B. Murphy
Summary: The study investigated the use of argon-helium mixtures in gas tungsten arc welding of an iron workpiece using a computational model. It was found that a transition from a helium-like to an argon-like arc occurs when the argon mole fraction exceeds about 0.3. Adding helium to argon altered arc properties and affected weld geometry, while iron vapor cooled the arc for all argon-helium mixtures. Emission spectroscopy measurements showed good agreement with the model's predictions.
WELDING IN THE WORLD
(2021)
Article
Materials Science, Multidisciplinary
Xiaoan Hu, Jian Zhao, Xuefeng Teng, Xiangfan Nie, Yun Jiang, Yu Zhang
Summary: In this study, the double-sided argon arc welded joint of a titanium alloy, TA15, was treated by laser shock peening (LSP). The hardness, residual stress, fatigue life, and the mechanism of fatigue crack nucleation of the joints before and after LSP strengthening were compared and analyzed. The results showed that LSP treatment increased the surface hardness of the welded joint, transferred the initiation location of fatigue crack, and significantly improved the fatigue life of the joint.
JOURNAL OF MATERIALS ENGINEERING AND PERFORMANCE
(2022)
Article
Optics
Kangda Hao, Zhiyuan Gao, Junwei Huang, Lianyong Xu, Youqing Liu, Yongdian Han, Lei Zhao, Wenjin Ren
Summary: This study investigated the weld formation, microstructure, and mechanical properties of Q235 steel during laser welding and laser-arc hybrid welding, with and without beam oscillation. It was found that beam oscillation increased the width of the heat affected zone in laser welding, while decreasing it in laser-arc hybrid welding. The microstructural changes indicated an increase in side-plate ferrite and a reduction in blocky ferrite and proeutectoid ferrite due to beam oscillation. Additionally, beam oscillation improved the elongation rate of the welds, while decreasing their micro-hardness. The relation between microstructure and mechanical properties was established based on the stirring effect of the oscillated laser beam within the molten pool and solidification theories.
OPTICS AND LASER TECHNOLOGY
(2023)
Article
Metallurgy & Metallurgical Engineering
K. Marumoto, H. Tamata, A. Fujinaga, T. Takahashi, H. Yamamoto, J. Choi, M. Yamamoto
Summary: In this study, the bead shape control and root penetration of fillet welding using hot-wire gas metal arc (GMA) laser hybrid welding technology were investigated. The results showed that hot-wire feeding prevented the occurrence of weld defects and obtained a sound bead shape. Additionally, the combination of hot-wire GMA and laser hybrid welding achieved sufficient root penetration at high welding speeds without defects.
WELDING IN THE WORLD
(2023)
Article
Automation & Control Systems
Hanling Wu, Yingjie Guo, Haijin Wang, Fei Yuan, Huiyue Dong, Yinglin Ke
Summary: In this study, a dynamic heat distribution model and TEP-FE approach are proposed to calculate the welding deformation on the reserved-clearance in multi-pass double-sided arc welding (DSAW) process. The heat distribution and moving heat approach is iterated in the TEP-FE analysis, taking into account heat convection and radiation dissipation. The results show that the proposed method accurately predicts the welding deformation on the reserved-clearance.
INTERNATIONAL JOURNAL OF ADVANCED MANUFACTURING TECHNOLOGY
(2022)
Article
Engineering, Civil
Weikang Kong, Wei Huang, Xiaodong Liu, Ya Wei
Summary: Orthotropic steel deck (OSD) is susceptible to fatigue damage, and welding residual stress (WRS) is an important factor contributing to fatigue damage. The double-sided submerged arc welding (DSSAW) technology can generate higher welding temperature, but the welding temperature field has not been evaluated yet. This study establishes a finite element model to simulate the welding temperature field and verifies the results using infrared thermal imager and temperature measurement gun. The findings help understand the welding temperature field caused by DSSAW and support further research on WRS.
Article
Automation & Control Systems
Caiwang Tan, Xiaoguo Song, Shenghao Meng, Bo Chen, Liqun Li, Jicai Feng
INTERNATIONAL JOURNAL OF ADVANCED MANUFACTURING TECHNOLOGY
(2016)
Article
Materials Science, Multidisciplinary
Caiwang Tan, Wenxiong He, Xiangtao Gong, Liqun Li, Jicai Feng
MATERIALS & DESIGN
(2015)
Article
Materials Science, Multidisciplinary
Hongbo Xia, Liqun Li, Ninshu Ma, Hui Huang
JOURNAL OF LASER APPLICATIONS
(2016)
Article
Materials Science, Multidisciplinary
Chuang Cai, Liqun Li, Xinya Chen, Jiecai Feng
JOURNAL OF LASER APPLICATIONS
(2016)
Article
Materials Science, Multidisciplinary
Chuang Cai, Liqun Li, Wang Tao, Genchen Peng, Xian Wang
JOURNAL OF MATERIALS ENGINEERING AND PERFORMANCE
(2016)
Article
Engineering, Industrial
Hui Huang, Jiandong Wang, Liqun Li, Ninshu Ma
JOURNAL OF MATERIALS PROCESSING TECHNOLOGY
(2016)
Article
Materials Science, Multidisciplinary
Caiwang Tan, Xiaoguo Song, Bo Chen, Liqun Li, Jicai Feng
Article
Engineering, Multidisciplinary
Jin Peng, Liqun Li, Shangyang Lin, Furong Zhang, Qinglong Pan, Seiji Katayama
MATHEMATICAL PROBLEMS IN ENGINEERING
(2016)
Article
Optics
Chuang Cai, Jiecai Feng, Liqun Li, Yanbin Chen
OPTICS AND LASER TECHNOLOGY
(2016)
Article
Optics
Fuquan Li, Zhenzeng Gao, Liqun Li, Yanbin Chen
OPTICS AND LASER TECHNOLOGY
(2016)
Article
Optics
Jiandong Wang, Liqun Li, Wang Tao
OPTICS AND LASER TECHNOLOGY
(2016)
Article
Materials Science, Multidisciplinary
C. Cai, L. Li, W. Tao, X. Chen
SCIENCE AND TECHNOLOGY OF WELDING AND JOINING
(2017)
Article
Materials Science, Multidisciplinary
Zhenguo Jiang, Wang Tao, Kun Yu, Caiwang Tan, Yanbin Chen, Liqun Li, Zhijun Li
MATERIALS & DESIGN
(2016)
Article
Optics
Caiwang Tan, Qingshuang Lu, Bo Chen, Xiaoguo Song, Liqun Li, Jicai Feng, Yang Wang
OPTICS AND LASER TECHNOLOGY
(2017)
Article
Metallurgy & Metallurgical Engineering
C. W. Tan, B. Chen, X. G. Song, L. Zhou, S. H. Meng, L. Q. Li, J. C. Feng
