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Spatter rate estimation of GMAW-S based on partial least square regression

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Abstract

This paper analyzes the drop transfer process in gas metal arc welding in short-circuit transfer mode (GMAW-S) in order to develop an optimized spatter rate model that can be used on line. According to thermodynamic characters and practical behavior, a complete arcing process is divided into three sub-processes: arc re-ignition, energy output and shorting preparation. Shorting process is then divided as drop spread, bridge sustention and bridge destabilization. Nine process variables and their distribution are analyzed based on welding experiments with high-speed photos and synchronous current and voltage signals. Method of variation coefficient is used to reflect process consistency and to design characteristic parameters. Partial least square regression (PLSR) is utilized to set up spatter rate model because of severe correlativity among the above characteristic parameters. PLSR is a new multivariate statistical analysis method, in which regression modeling, data simplification and relativity analysis are included in a single algorithm. Experiment results show that the regression equation based on PLSR is effective for on-line predicting spatter rate of its corresponding welding condition.

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Authors and Affiliations

  1. School of Materials Science and Engineering, Shanghai Jiaotong University, Shanghai, 200240, China

    Yan Cai  (蔡 퇞), Guang-wei Wang  (王맣캰), Hai-lan Yang  (퇮몣澜), Xue-ming Hua  (뮪톧쏷) & Yi-xiong Wu  (컢틣雄)

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  1. Yan Cai  (蔡 퇞)
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  2. Guang-wei Wang  (王맣캰)
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  3. Hai-lan Yang  (퇮몣澜)
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  4. Xue-ming Hua  (뮪톧쏷)
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  5. Yi-xiong Wu  (컢틣雄)
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Correspondence to Yan Cai  (蔡 퇞).

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Cai, Y., Wang, Gw., Yang, Hl. et al. Spatter rate estimation of GMAW-S based on partial least square regression. J. Shanghai Jiaotong Univ. (Sci.) 13, 695–701 (2008). https://doi.org/10.1007/s12204-008-0695-2

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  • DOI: https://doi.org/10.1007/s12204-008-0695-2

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