ACOUSTIC EMISSION MONITORING OF MULTI-PASS SUBMERGED-ARC WELDING

The acoustic emission method has been used to detect the formation of flaws during submerged arc welding. This paper describes a technique that detects cracks and entrapped slag as the weld metal solidifies. Emissions from slag are also detected on subsequent weld passes over the defective region. Multi-pass welds in 6 in. thick carbon steel plates have been monitored using acoustic emission sensors that travel with the welding electrode. The detection system provides flaw location capability for immediate weld repair, reducing post-weld repair expenses. Weld monitoring parameters, experimental techniques, and data analysis are discussed. Typical experimental data are presented.

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  • Corporate Authors:

    American Society for Nondestructive Testing

    914 Chicago Avenue
    Evanston, IL  USA  60202
  • Authors:
    • Wehrmeister, A E
  • Publication Date: 1977-6

Media Info

  • Features: Figures; Photos; References;
  • Pagination: p. 45-47
  • Serial:
    • Materials Evaluation
    • Volume: 35
    • Issue Number: 6
    • Publisher: American Society for Nondestructive Testing
    • ISSN: 0025-5327

Subject/Index Terms

Filing Info

  • Accession Number: 00159593
  • Record Type: Publication
  • Files: TRIS
  • Created Date: Sep 28 1977 12:00AM