Asymmetric Abel Inversion in Imaging Spectroscopy for Tilted TIG Arc Plasma

• Yamashita Yuto

  Joining and Welding Research Institute, Osaka Univ.

• Shigeta Masaya

  Joining and Welding Research Institute, Osaka Univ. (Present Address: Graduate School of Engineering, Tohoku Univ.)

• Komen Hisaya

  Joining and Welding Research Institute, Osaka Univ.

• Tanaka Manabu

  Joining and Welding Research Institute, Osaka Univ.

Bibliographic Information

Other Title

• 傾斜ティグアークプラズマを対象とした画像分光法における非対称Abel逆変換処理

Abstract

An asymmetric Abel inversion processing system was developed to establish a method for diagnosing arc plasma that has an elliptical cross section and is a non-axisymmetric in the direction perpendicular to the observation direction during an arc welding process. This method was applied to an arc plasma in a tilted tungsten inert gas (TIG) welding process. As a result, when this method was applied to the non-axisymmetric intensity distribution due to integration, it was confirmed that the relative error near the central axis and the edge was large regardless of the difference in the cross-sectional shape. In addition, after applying this method to the tilted TIG arc plasma, it was shown that an error of about 350 K occurred in the temperature distribution when emission intensity distribution was converted to the temperature distribution by the Fowler-Milne method. Furthermore, the temperature distribution of the arc plasma obtained in this study was slightly wider than the previous study, while the high-temperature area where the temperature was higher than 14000 K showed a good agreement with the previous study. Therefore, it was concluded that, by applying this method to the tilted TIG arc plasma, the equivalent result to the three-dimensional emission spectroscopy could be obtained by photographing a tilted arc plasma from two directions.

Journal

• QUARTERLY JOURNAL OF THE JAPAN WELDING SOCIETY

  QUARTERLY JOURNAL OF THE JAPAN WELDING SOCIETY 39 (4), 233-240, 2021

  JAPAN WELDING SOCIETY

Keywords

• Tilted TIG Arc Plasma
• Imaging Spectroscopy
• Asymmetric Abel Inversion
• Elliptical Cross Section
• Fowler-Milne Method

Details

• CRID: 1390572012411067008
• NII Article ID: 130008136602
• DOI: 10.2207/qjjws.39.233
• ISSN: 24348252
• ISSN: 02884771
• Web Site: https://www.jstage.jst.go.jp/article/qjjws/39/4/39_233/_pdf
• Text Lang: ja
• Data Source:
  • JaLC
  • Crossref
  • CiNii Articles
  • KAKEN
• Abstract License Flag: Disallowed