Weld quality monitoring system

Ari Nikkola, Kalervo Leino, Karri Vartiainen

Research output: Book/ReportReport


Possible ways of monitoring the quality of welds in mechanised gas metal arc (GMA) welding by monitoring certain welding parameters are described. In addition to the common parameters of welding i.e. voltage, current, wire feed speed and travel speed, a system was developed capable of monitoring welding energy, short-circuiting frequency, proportional arc duration and arc sound emission. Particular attention was paid to the sound emission monitoring and measuring system. The arc sound emission was correlated to the weld defect formation.
Original languageEnglish
Place of PublicationEspoo
PublisherVTT Technical Research Centre of Finland
Number of pages44
ISBN (Print)951-38-2015-7
Publication statusPublished - 1984
MoE publication typeD4 Published development or research report or study

Publication series

SeriesValtion teknillinen tutkimuskeskus. Tutkimuksia - Research Reports


  • automatic welding
  • weld defects
  • quality control
  • data recording


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