SIMULATION OF ELECTROSLAG WELD DEFECTS: AN INTERMEDIATE REPORT ON ACOUSTIC EMISSION MONITORING OF ELECTROSLAG WELDING

This intermediate report describes efforts to adapt acoustic emission (AE) monitoring technology to the in-process nondestructive evaluation (NDE) of electroslag welding (ESW). Methods were developed to introduce controlled artificial flaws in ESW welds. AE monitoring equipment was assembled and techniques were developed to address the specific problems associated with AE monitoring of ESW. A total of seven welds were monitored. These welds had solidification cracks and lack of fusion (LOF) flaws both artificially induced and naturally formed. The recorded AE data were analyzed and the results were correlated with radiography. Preliminary accept/reject criteria were formulated. A draft technical operational guide for applying AE monitoring to ESW was developed based on a modified version of ASTM Standard Practice E 749, "Standard Practice for Acoustic Emission Monitoring during Continuous Welding". The necessary ASTM modification procedure will be pursued when appropriate.

  • Corporate Authors:

    Northwestern University, Evanston

    Basic Industrial Research Laboratory, 1801 Maple Street
    Evanston, IL  United States  60201-3135

    Federal Highway Administration

    Office of Technology Applications, 1200 New Jersey Avenue, SE
    Washington, DC  United States  20590
  • Authors:
    • Prine, D
    • Oleksy, J E
    • Malin, V
  • Publication Date: 1996-2-16

Language

  • English

Media Info

  • Pagination: 47 p.

Subject/Index Terms

Filing Info

  • Accession Number: 00725588
  • Record Type: Publication
  • Report/Paper Numbers: FHWA-SA-96-054, Intermediate Report, A420-N1
  • Contract Numbers: DTFH61-93-C-00104
  • Files: TRIS, USDOT
  • Created Date: Sep 17 1996 12:00AM