Nonlinear modeling of dynamic metal transfer in laser-enhanced GMAW

Y. Huang, Y. Shao, Y. M. Zhang

Research output: Contribution to journalArticlepeer-review

10 Scopus citations

Abstract

In laser-enhanced gas metal arc welding (GMAW), which projects a lower-power laser onto the droplet, free flight metal transfer was obtained. Laser recoil pressure force is identified as the main reason to change the metal transfer process. For further control of laser-enhanced GMAW, this additional detaching force is estimated at a reasonable level. A nonlinear model of dynamic metal transfer is established based on the physics fundamental of this process. Laser recoil pressure force is combined into dynamic force balance theory to be as the reset criterion to detect the droplet detachment. It is found that the simulation results agree with the experiment results, which indicate that the model could be used for the further closedloop control.

Original languageEnglish
Pages (from-to)140-148
Number of pages9
JournalWelding Journal (Miami, Fla)
Volume91
Issue number5
StatePublished - May 2012

Keywords

  • (GMAW)
  • Gas metal arc welding
  • Laser recoil pressure force
  • Metal transfer
  • Nonlinear model

ASJC Scopus subject areas

  • Mechanics of Materials
  • Mechanical Engineering
  • Metals and Alloys

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