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.

• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/issn/00255327
• Corporate Authors:

  American Society for Nondestructive Testing

  914 Chicago Avenue
  Evanston, IL  United States  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

• TRT Terms: Acoustic measuring instruments; Acoustics; Carbon steel; Cracking; Defects; Electrodes; Fungi; Repairing; Structural plates; Submerged arc welding; Welding; Welds
• Uncontrolled Terms: Plates; Repairs; Weld defects
• Old TRIS Terms: Acoustic measurement; Mold /fungi/; Welding electrodes
• Subject Areas: Geotechnology; Highways; Materials;

Filing Info

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