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Welding in the World

, Volume 60, Issue 2, pp 355–361 | Cite as

Qualitative and quantitative analyses of arc characteristics in SMAW

  • Masaya Shigeta
  • Takahiro Ikeda
  • Manabu Tanaka
  • Tetsuo Suga
  • Bovornchok Poopat
  • Somporn Peansukmanee
  • Niwat Kunawong
  • Ackadech Lersvanichkool
  • Hiroaki Kawamoto
  • Supot Thongdee
  • Kazuyuki Suenaga
  • Makoto Ota
Research Paper
  • 237 Downloads

Abstract

This study was conducted to develop a quantitative evaluation system for arc characteristics such as arc stability and welding spatter generation related to shielded metal arc welding (SMAW) without human sensory evaluation. Factors that correspond to sensory evaluations by welders were investigated based on image processing. For the quantitative evaluation of arc stability, results show that the root mean square and the standard deviation of the arc center fluctuation, respectively, correspond to welders’ sensory evaluation at AC and DC discharges. For welding spatter generation, a method of counting white pixels in a binarized image evaluates the number and size of welding spatters which closely coincide with welders’ sensory evaluations.

Keywords (IIW Thesaurus)

MMA welding Electric arcs Stability Spatter Sensors Monitoring systems Imaging 

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Copyright information

© International Institute of Welding 2016

Authors and Affiliations

  • Masaya Shigeta
    • 1
  • Takahiro Ikeda
    • 1
  • Manabu Tanaka
    • 1
  • Tetsuo Suga
    • 1
  • Bovornchok Poopat
    • 2
  • Somporn Peansukmanee
    • 2
  • Niwat Kunawong
    • 2
  • Ackadech Lersvanichkool
    • 3
  • Hiroaki Kawamoto
    • 3
  • Supot Thongdee
    • 3
  • Kazuyuki Suenaga
    • 4
  • Makoto Ota
    • 4
  1. 1.Joining and Welding Research InstituteOsaka UniversityIbarakiJapan
  2. 2.King Mongkut’s University of Technology ThonburiBangkokThailand
  3. 3.Thai-Kobe Welding Co. Ltd.Samut PrakanThailand
  4. 4.Welding Process DepartmentKobe Steel, Ltd.FujisawaJapan

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