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Processing parameter optimization of fiber laser beam welding using an ensemble of metamodels and MOABC

Frontiers of Mechanical Engineering 2022, Volume 17, Issue 4, doi: 10.1007/s11465-022-0703-5

Abstract: In fiber laser beam welding (LBW), the selection of optimal processing parameters is challenging andplays a key role in improving the bead geometry and welding quality.metamodels (EMs) with the multi-objective artificial bee colony algorithm (MOABC) to identify the optimal weldingEM constructs the correlation between processing parameters (laser power, welding speed, and distance

Keywords： laser beam welding     parameter optimization     metamodel     multi-objective    

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Effects on mechanical properties in electron beam welding of TC4 alloy by laser shock processing

LU Jinzhong, ZHANG Yongkang, KONG Dejun, REN Xudong, GE Tao, ZOU Shikun

Frontiers of Mechanical Engineering 2007, Volume 2, Issue 4,   Pages 478-482 doi: 10.1007/s11465-007-0083-x

Abstract: The surface of TC4 titanium alloy welding line by electron beam welding (EBW) was processed by high powerQ-switched and repetition-rate Nd: glass laser.Effects of laser power and spot diameter on residual stress and micro-hardness of the TC4 alloy weldingWhen power density is bigger than 1.8×10 W/cm, residual stresses of electron beam welding line occur1.2×10 W/cm, the surface micro-hardness of electron beam welding line occurs change by LSP, which improve
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Effects on Residual Stress of Electron Beam Welding of TC4 Al loy by Laser Phase Transformation Treatment

Lu Jinzhong,Zhang Yongkang,Kong Dejun,Ren Xudong,Zou Shikun,Wang Xichang

Strategic Study of CAE 2007, Volume 9, Issue 5,   Pages 72-76

Abstract:

  In this study,  an effective control method and strategy based on fuzzy neural network has been developed for gas injection pressure accurate control in gas-assisted injection. A fuzzy neural network controller with five layers and its control algorithm are established.  The learning ability of neural network is used to optimize the rules of the fuzzy logic so as to improve the adaptability of system.  The simulation of the system capability and three segmental injected pressure control are carried out under the environment of MATLAB and the results show that this theoretic model is feasible, and the control system has good characteristics and control action.

Keywords： laser phase transformation treatment     TC4titanium alloy     electron beam welding(EBW)     residual stress    

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Development of Laser Cutting and Joining Processing

Chen Li, Gong Shuili, He Enguang

Strategic Study of CAE 2020, Volume 22, Issue 3,   Pages 78-84 doi: 10.15302/J-SSCAE-2020.03.012

Abstract:

Laser cutting and joining technology is indispensable as an advancedbe surely promoted by the integration of laser technology and digital manufacturing technology.joining and cutting technology, namely, laser welding, laser cutting, laser drilling, and laser markingThe problems faced by the development of the laser joining and cutting technology are discussed.unit, laser materials processing, and intelligent integration.

Keywords： laser material processing     laser welding     laser cutting     laser drilling     laser marking    

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Online Monitoring of Welding Status Based on a DBN Model During Laser Welding Article

Yanxi Zhang, Deyong You, Xiangdong Gao, Seiji Katayama

Engineering 2019, Volume 5, Issue 4,   Pages 671-678 doi: 10.1016/j.eng.2019.01.016

Abstract: 780 nm), a spectrometer, and a photodiode are employed to capture insights into the high-power disc laserwelding process.The features of the visible optical light signal and the reflected laser light signal are extracted byto monitor the welding status.The established DBN model shows higher accuracy and robustness in monitoring welding status in comparison

Keywords： Online monitoring     Multiple sensors     Wavelet packet decomposition     Deep belief network    

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Laser vision sensing based on adaptive welding for aluminum alloy

CHEN Zhixiang, SONG Yonglun, ZHANG Jun, ZHANG Wanchun, JIANG Li, XIA Xuxin

Frontiers of Mechanical Engineering 2007, Volume 2, Issue 2,   Pages 218-223 doi: 10.1007/s11465-007-0038-2

Abstract: A laser vision sensing based on the adaptive tungsten inert gas (TIG) welding system for large-scaleA new type of laser vision sensor was used to precisely measure the weld groove.., aided in assembling large-scale aerospace components before welding.An adaptive welding process was realized by automatically adjusting the wire feeding speed and the weldingThe process results in a good weld formation and high welding quality, which meet the requirements of

Keywords： adjustment     adaptive tungsten     transverse alignment     large-scale aluminum     geometry    

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Laser interference fabrication of large-area functional periodic structure surface

Lei WANG, Zi-Han WANG, Yan-Hao YU, Hong-Bo SUN

Frontiers of Mechanical Engineering 2018, Volume 13, Issue 4,   Pages 493-503 doi: 10.1007/s11465-018-0507-9

Abstract: The laser interference technique in particular has received attention because of its simplicity, lowHere, we reviewed the work on laser interference fabrication of large-area functional periodic structuresFor the common cases, four-beam interference and multi-exposure of two-beam interference were emphasizedThe relations between multi-beam interference and multi-exposure of two-beam interference were comparedPerspectives on future directions and applications for laser interference were presented.

Keywords： laser interference     four-beam interference     multi-exposure of two-beam interference     additive fabrication    

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The Application and the Prospect of Remanufacturing Technologies in the Metallurgical Industry

Jie Xiong,Jian-cheng Fan,Jv Yuan

Frontiers of Engineering Management 2016, Volume 3, Issue 2,   Pages 165-170 doi: 10.15302/J-FEM-2016023

Abstract: This paper introduces remanufacturing technologies, including electroplating, overlaying welding, thermalspraying and laser surface cladding and their applications in the metallurgical industry, and analyzes

Keywords： remanufacturing technology     electroplating     overlaying welding     thermal spraying     laser surface cladding    

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The shape control over the front-end of excimer laser beam

Zhao Xueqing,Xue Quanxi,Zheng Guoxin,Huang Ke,Xiao Weiwei,Yi Aiping,Liu Jingru

Strategic Study of CAE 2009, Volume 11, Issue 8,   Pages 52-57

Abstract:

In high power excimer laser system, the shape of output laser beam fromwhole system is mainly determined by the front-end of laser beam, and is closely correlated to the requirementThe experimental development of the front-end laser beam shape control based on a short pulse excimerlaser is described.scattering source satisfying requirement of system construction has been developed, and the top-hat laser

Keywords： excimer laser     beam smoothing     uniformity     pulse shaping     high power    

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Recent advances in micro- and nano-machining technologies

Shang GAO, Han HUANG

Frontiers of Mechanical Engineering 2017, Volume 12, Issue 1,   Pages 18-32 doi: 10.1007/s11465-017-0410-9

Abstract: micro- and nano-machining technologies, including micro-cutting, micro-electrical-discharge machining, lasermicro-machining, and focused ion beam machining.

Keywords： micro machining     cutting     electro discharge machining (EDM)     laser machining     focused ion beam (FIB)    

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ARC welding method for bonding steel with aluminum

Zhenyang LU, Pengfei HUANG, Wenning GAO, Yan LI, Hanpeng ZHANG, Shuyan YIN

Frontiers of Mechanical Engineering 2009, Volume 4, Issue 2,   Pages 134-146 doi: 10.1007/s11465-009-0033-x

Abstract: When welding steel with aluminum, the appearance of intermetallic compounds of Fe and Al will decreaseA new type of low energy input (LEI) welding technology is introduced which can be used to weld steelUsing the technology, brazing was located on the steel side and arc fusion welding on the aluminum side

Keywords： joining of steel and aluminum     low energy input welding     arc welding     fusion welding – brazing    

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The Round-metal-resonator CO2 Laser with Spiral Flow

Li Zaiguang,Gong Wei

Strategic Study of CAE 2001, Volume 3, Issue 1,   Pages 58-61

Abstract: transverse flow, coaxial flow and diffusion cooling are the current types of high power CO2 laserA new CO2 laser is being developed.As a result, a new CO2 laser with high beam quality and compactness can be obtained.

Keywords： CO2 laser     round-metal-resonator     spiral flow     beam quality    

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Kinetics and mechanisms of reactions for hydrated electron with chlorinated benzenes in aqueous solution

Haixia YUAN,Huxiang PAN,Jin SHI,Hongjing LI,Wenbo DONG

Frontiers of Environmental Science & Engineering 2015, Volume 9, Issue 4,   Pages 583-590 doi: 10.1007/s11783-014-0691-8

Abstract: reactions between chlorinated benzenes (CBzs) and hydrated electron ( ) were investigated by the electron beam(EB) and laser flash photolysis (LFP) experiments.

Keywords： chlorinated benzenes     hydrated electron     electron beam     laser flash photolysis    

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Study of mechanism of activating flux increasing weld penetration of AC A-TIG welding for aluminum alloy

HUANG Yong, FAN Ding, FAN Qinghua

Frontiers of Mechanical Engineering 2007, Volume 2, Issue 4,   Pages 442-447 doi: 10.1007/s11465-007-0076-9

Abstract: is over two times more than that of conventional TIG welding.Using A-TIG welding with the modes of alternating current (AC), direct current electrode negative (DCENAfter studied the effect of compelled arc con striction on weld penetration of AC welding, it is believedwere confirmed by TIG welding with helium shielding gas.During welding, the separate distribution of slag on the weld pool results in the great constriction

Keywords： A-TIG welding     surface     DCEN     electrode negative     increase    

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Offline motion planning and simulation of two-robot welding coordination

Tie ZHANG, Fan OUYANG

Frontiers of Mechanical Engineering 2012, Volume 7, Issue 1,   Pages 81-92 doi: 10.1007/s11465-012-0309-4

Abstract:

This paper focuses on the two-robot welding coordination of complex curve seam which means one robotMoreover, downhand welding is employed which can guarantee the torch and the seam keep in good contactcondition all the time during the welding.a Solidworks-SimMechanics simulation platform is established, and a simulation of curved steel pipe weldingThe results of the simulation illustrate the welding process can meet the requirements of downhand welding

Keywords： complex curve seam     two robots     coordinated welding     motion planning    

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Title Author Date Type Operation

Processing parameter optimization of fiber laser beam welding using an ensemble of metamodels and MOABC

Journal Article

Effects on mechanical properties in electron beam welding of TC4 alloy by laser shock processing

LU Jinzhong, ZHANG Yongkang, KONG Dejun, REN Xudong, GE Tao, ZOU Shikun

Journal Article

Effects on Residual Stress of Electron Beam Welding of TC4 Al loy by Laser Phase Transformation Treatment

Lu Jinzhong,Zhang Yongkang,Kong Dejun,Ren Xudong,Zou Shikun,Wang Xichang

Journal Article

Development of Laser Cutting and Joining Processing

Chen Li, Gong Shuili, He Enguang

Journal Article

Online Monitoring of Welding Status Based on a DBN Model During Laser Welding

Yanxi Zhang, Deyong You, Xiangdong Gao, Seiji Katayama

Journal Article

Laser vision sensing based on adaptive welding for aluminum alloy

CHEN Zhixiang, SONG Yonglun, ZHANG Jun, ZHANG Wanchun, JIANG Li, XIA Xuxin

Journal Article

Laser interference fabrication of large-area functional periodic structure surface

Lei WANG, Zi-Han WANG, Yan-Hao YU, Hong-Bo SUN

Journal Article

The Application and the Prospect of Remanufacturing Technologies in the Metallurgical Industry

Jie Xiong,Jian-cheng Fan,Jv Yuan

Journal Article

The shape control over the front-end of excimer laser beam

Zhao Xueqing,Xue Quanxi,Zheng Guoxin,Huang Ke,Xiao Weiwei,Yi Aiping,Liu Jingru

Journal Article

Recent advances in micro- and nano-machining technologies

Shang GAO, Han HUANG

Journal Article

ARC welding method for bonding steel with aluminum

Zhenyang LU, Pengfei HUANG, Wenning GAO, Yan LI, Hanpeng ZHANG, Shuyan YIN

Journal Article

The Round-metal-resonator CO2 Laser with Spiral Flow

Li Zaiguang,Gong Wei

Journal Article

Kinetics and mechanisms of reactions for hydrated electron with chlorinated benzenes in aqueous solution

Haixia YUAN,Huxiang PAN,Jin SHI,Hongjing LI,Wenbo DONG

Journal Article

Study of mechanism of activating flux increasing weld penetration of AC A-TIG welding for aluminum alloy

HUANG Yong, FAN Ding, FAN Qinghua

Journal Article

Offline motion planning and simulation of two-robot welding coordination

Tie ZHANG, Fan OUYANG

Journal Article