|
|
|
题名
|
作者
|
年代
|
出处
|
被引量
|
| 1 | Numerical Analysis of Welding Residual Stress and Distortion in Laser+GMAW Hybrid Welding of Aluminum Alloy T-Joint显示文摘A 3-D finite element model is developed to predict the temperature field and thermally induced residual stress and distortion in laser+GMAW hybrid welding of 6061-T6 aluminum alloy T-joint. And the characteristics of residual stress distribution and deformation are numerically investigated. In the simulation, the heat source model takes into account the effect of joint geometric shape and welding torch slant on the heat flux distribution and a sequentially coupled thermo-mechanical method is used. The calculated results show that higher residual stress is distributed in and surround the weld zone. Its peak value is very close to the yield strength of base metal. Besides, a large deformation appears in the middle and rear part of the weldment. | Guoxiang XU Chuansong WU Xuezhou MA Xuyou WANG | 2013 | Acta Metallurgica Sinica(English Letters)2013，26，3： | 10 |
| 2 | An analytic formula describing the plasma arc pressure distribution显示文摘 | Li Tianqing Wu Chuansong | 2014 | China Welding2014，23，2： | 5 |
| 3 | Three-Dimensional Reconstruction of Welding Pool Surface by Binocular Vision显示文摘Current research of binocular vision systems mainly need to resolve the camera’s intrinsic parameters before the reconstruction of three-dimensional(3D)objects.The classical Zhang’calibration is hardly to calculate all errors caused by perspective distortion and lens distortion.Also,the image-matching algorithm of the binocular vision system still needs to be improved to accelerate the reconstruction speed of welding pool surfaces.In this paper,a preset coordinate system was utilized for camera calibration instead of Zhang’calibration.The binocular vision system was modified to capture images of welding pool surfaces by suppressing the strong arc interference during gas metal arc welding.Combining and improving the algorithms of speeded up robust features,binary robust invariant scalable keypoints,and KAZE,the feature information of points(i.e.,RGB values,pixel coordinates)was extracted as the feature vector of the welding pool surface.Based on the characteristics of the welding images,a mismatch-elimination algorithm was developed to increase the accuracy of image-matching algorithms.The world coordinates of matching feature points were calculated to reconstruct the 3D shape of the welding pool surface.The effectiveness and accuracy of the reconstruction of welding pool surfaces were verified by experimental results.This research proposes the development of binocular vision algorithms that can reconstruct the surface of welding pools accurately to realize intelligent welding control systems in the future. | Zunan Gu Ji Chen Chuansong Wu | 2021 | Chinese Journal of Mechanical Engineering2021，34，3： | 4 |
| 4 | NUMERICAL ANALYSIS OF THREE-DIMENSIONAL FLUID FLOW AND HEAT TRANSFER IN TIG WELD POOL WITH FULL PENETRATION WU Chuansong,CAO Zhenning,WU Lin Harbin Institute of Technology,Harbin,China显示文摘KEY WORDS TIG weld pool,full penetration,fluid flow,heat transfer。 | WU Chuansong,CAO Zhenning,WU Lin Harbin Institute of Technology,Harbin,China | 1993 | Acta Metallurgica Sinica(English Letters)1993，6，8： | 4 |
| 5 | Review: Progress and Trends in Ultrasonic Vibration Assisted Friction Stir Welding显示文摘This paper aims to reviewthe state-of-the-art of ultrasonic vibration assisted friction stir welding(UVAFSW) process. Particular attention has been paid on the modes of ultrasonic exertion,experimental results and effects of ultrasonic vibrations on process effectiveness and joint quality. The trends of various aspects with and without ultrasonic vibrations in FSW process are studied and presented. The influence of ultrasonic vibrations on welding loads, temperature history, weld morphology, material flow, weld microstructure and mechanical properties are revisited. Ultrasonic assisted FSW offers numerous advantages over the conventional FSW process. The superimposing of high-frequency vibrations improves various phenomena of the process and the physical,metallurgical,mechanical and tribological properties of the welded joint. The ultrasonic assisted FSW process has a potential to benefit the industry sector. A checklist listing the materials and process parameters used in the documented studies has been presented for quick reference. | Najib Ahmad Muhammad Chuansong Wu Girish Kumar Padhy | 2018 | Journal of Harbin Institute of Technology(New Series)2018，25，3： | 3 |
| 6 | Mechanism of Metal Transfer in DE-GMAW显示文摘Modification of conventional gas metal arc welding (GMAW) process is of great potential to achieve high productivity with low cost and strong usability. Double-Electrode GMAW (DE-GMAW) is such a modified arc welding process which is formed by adding a bypass torch (gas tungsten arc welding torch) to a conventional GMAW system. The mechanism of metal transfer in DE-GMAW was proposed and verified in this paper. Experiments show that the critical current is decreased so that spray transfer can be obtained at a lower current level in DE-GMAW. Analysis of this significant change in metal transfer phenomena is conducted, and explanation is given out. It is found that the bypass arc in DE-GMAW lifts the anode point on the droplets such that the electromagnetic force becomes larger and squeezes the droplets so that spray transfer can take place under welding current lower than that in conventional GMAW. | Kehai Li Chuansong Wu | 2009 | Journal of Materials Science & Technology2009，25，3： | 3 |
| 7 | Suppressing of humping bead using an external magnetic field in high-speed gas metal arc welding显示文摘 | Yang Fengzhao Wu Chuansong Gao Jinqiang | 2014 | China Welding2014，23，2： | 2 |
| 8 | Numerical Simulation for the Optimization of Polygonal Pin Profiles in Friction Stir Welding of Aluminum显示文摘The tool with polygonal pin profile has been widely employed in friction stir welding(FSW) of aluminum, but there is hardly an effective optimization methodology existed as the thermomechanical characteristics affected by pins with various flats number have not been understood comprehensively. Therefore, the present work employs a 3-dimensional computational fluid dynamics(CFD) model to have an integrated observation of the FSW process with the effect of polygonal pin profiles. Both the heat generation modes due to contact friction at the tool–workpiece interface and volumetric viscous dissipation in the vicinity of the tool are considered. The model is utilized to give a quantitative analysis of the heat generation, temperature distribution, plastic material flow and welding loads during the FSW process for various tools with polygonal pin profiles, as well as a variety of shoulder diameters, welding speeds and tool rotation speeds. The calculated results of thermal cycles, tool torques and joint cross sections for some typical polygonal pins and welding parameters are all found to be compared well with the experimental ones, which demonstrates the feasibility and applicability of the present numerical model. Particularly, a methodology is developed for the optimization of the flats number by identifying the torque components in both parallel and vertical direction of the pin-side flat region. The results show that the optimized pin flats number increases with increasing tool rotation speed, while the influence of both welding speed and shoulder diameter can be supposed to be insignificant. Moreover, the dependability of the optimized results is also discussed by considering wear tendency and service life of the pin for multiple welding conditions. | Hao Su Chuansong Wu | 2021 | Acta Metallurgica Sinica(English Letters)2021，34，8： | 2 |
| 9 | Evolution of microstructures and intermetallic compounds at bonding interface in friction stir welding of dissimilar Al/Mg alloys with/without ultrasonic assistance显示文摘Complete understanding of the evolution behaviors of the microstructures and intermetallic compounds(IMCs)along the interface materials flow path in friction stir welding(FSW)of dissimilar Al to Mg alloys is of great significance.In this study,conventional FSW and ultrasonic vibration enhanced FSW(UVeFSW)experiments of Al/Mg alloys were performed,and the instantaneous evolution features of the interface materials around the tool were'frozen'by using the'sudden stop'and simultaneous cooling techniques.The microstructures and IMCs formation at different locations around the exit hole were observed and characterized by scanning electron microscope,energy dispersive spectrometer and transmission elec-tron microscope.It was found that before the materials started to deposit near the back of the tool,“IMC+Mg+IMC+Al”multilayer microstructure and simple IMC layer with(β+γ)sequentially emerged on the Al/Mg interface.With the application of ultrasonic vibration,the multi-layered interface structure only appeared at the middle stage of materials flow around the pin,and ultrasonic vibration just began to play a suppression role on the growth of two sub-layers IMC at a position where the materials deposit.With assistance of ultrasonic vibration in UVeFSW,the tool drove a larger volume of Mg alloy to move toward the retreating side,and the final IMCs thickness was thinner than that in FSW. | Junjie Zhao ChuanSong Wu Lei Shi Hao Su | 2023 | Journal of Materials Science & Technology2023，，8： | 2 |
| 10 | H5N6禽流感病毒的基因起源、进化和流行显示文摘2014~2016年间对我国16个省份活禽市场的监测,共鉴定了3174份流感阳性样品,分离并测序了1135份禽流感病毒,分属于31种亚型。 | yuhai bi quanjiao chen qianli wang jianjun chen tao jin gary wong chuansong quan jun liu jun wu renfu yin lihua zhao mingxin li zhuang ding rongrong zou wen xu hong li huijun wang kegong tian guanghua fu yu huang alexander shestopalov shoujun li bing xu hongjie yu tingrong luo lin lu xun xu yang luo 刘映霞 史卫峰 刘翟 高福 | 2017 | 科学新闻2017，0，4： | 2 |
| 11 | Computer simulation of three-dimensionalconvection in traveling MIG weld pool显示文摘 | Wu Chuansong | 1992 | Engineering Com- putations1992，9，5： | 1 |
| 12 | Self-assembly of fibrous ZSM-5 zeolites in the presence of sodium alginate显示文摘 | Jinlong Jiang Shoupeng Ji Chuansong Duanmu Yichang Pan Jie wu Mei Wu Jing Chen | 2017 | Particuology2017，15，4： | 1 |
| 13 | Computer simulation of three-dimensional convection in traveling MIG weld pool显示文摘 | Wu Chuansong | 1992 | Engineering Computations1992，9，5： | 1 |
| 14 | Numerical Analysis of Heat Transfer and Fluid Flow in Keyhole Plasma Arc Welding显示文摘 | Tao Zhang ChuanSong Wu Yanhui Feng | 2011 | Numerical Heat Transfer Part A: Applications2011，，8： | 1 |
| 15 | An Adaptive Heat Source Model for Finite-Element Analysis of Keyhole Plasma Arc Welding 显示文摘 | WU Chuansong HU Qingxian GAO Jinqiang | 2009 | Computational Materials Science2009，46，： | 1 |
| 16 | Fluid Flow and Heat Transfer in GMA Weld Pools 显示文摘 | Tsao K C Wu Chuansong | 1988 | Welding Journal1988，67，3： | 1 |
| 17 | Computer simulation of three-dimensional convection in traveling MIG weld pool 显示文摘 | WU Chuansong | 1992 | Engineering Computations1992，9，5： | 1 |
| 18 | A computer-based control system for keyhole plasma arc welding 显示文摘 | JIA Chuanbao WU Chuansong ZHANG Yuming | 2007 | China Welding2007，16，1： | 1 |
| 19 | Mechanism of metal transfer in DE- GMAW显示文摘 | Li Kehai Wu Chuansong | 2009 | Journal of Material Science and Technology2009，25，3： | 1 |
| 20 | Sepeular reflection based sensing surface deformation of gas tungsten arc weld pool 显示文摘 | Zhang Shiliang Gao Jinqiang Wu Chuansong | 2007 | China Welding2007，16，20： | 1 |
您所在的机构暂未开通此部分的功能，请联系管理员