Welding in the World

, Volume 61, Issue 6, pp 1169–1179 | Cite as

Model-based description of arc length as a synergetic system parameter in pulsed GMAW

  • Uwe Reisgen
  • Samuel Mann
  • Philipp Lozano
  • Guido Buchholz
  • Konrad Willms
  • Birger Jaeschke
Research Paper


Gas metal arc welding demonstrates a dynamic and inherently stochastic process behavior. Interdependencies of machine setup and process boundary conditions and the resulting process and weld product qualities are complex in nature, as the optimization of GMAW processes with regard to product quality demands expert knowledge. This work introduces a practical approach of mapping the arc length as a physical key process variable to the most influential pulsed GMAW setup parameters by means of generation and application of statistical process models. It further describes the necessary steps, including the determination of certain investigated variables, generating a statistical reasonable design of experiment and the actual model calculation and evaluation. Furthermore, field test evaluations of derived statistical models have been discussed, proving a successful statistical model generation process.

Keywords (IIW Thesaurus)

Arc welding Pulsed arc welding Statistical methods Process parameters 



The authors would like to thank the German Research Foundation DFG for the support of the research work which has been carried out within the framework of the Cluster of Excellence “Integrative Production Technology for High-Wage Countries” and the participating partners from the industry for their support.


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Copyright information

© International Institute of Welding 2017

Authors and Affiliations

  1. 1.Welding and Joining Institute (ISF)RWTH Aachen UniversityAachenGermany
  2. 2.Lorch SchweißtechnikAuenwaldGermany

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