THE EFFECT OF INTERNAL WELD DEFECTS ON THE FATIGUE BEHAVIOR OF WELDED CONNECTIONS

THE FATIGUE BEHAVIOR OF BUTT WELDED JOINTS IN A36 STEEL WAS STUDIED. THE TESTING PROGRAM INCLUDED WELDS WITH POROSITY GREATER AND LESS THAN ALLOWABLE IN THE AWS BRIDGE SPECIFICATIONS AND JOINTS WITH LACK OF PENETRATION. THE RESULTS SHOWED THAT LARGE CLUSTERS OF POROSITY AND LACK OF PENETRATION SIGNIFICANTLY REDUCED THE FATIGUE LIFE FROM THAT OF SOUND WLEDS OR WELDS WITH SMALL POROSITY. ULTRASONIC AND RADIOGRAPHIC INSPECTION METHODS WERE UNABLE TO DETECT THE LACK OF PENETRATION DEFECTS. THE CRACK GROWTH RATE FROM THE LACK OF PENETRATION WAS DETERMINED. THE CRACK LENGTH WAS DETERMINED FROM RADIOGRAPHS OF THE JOINT. THE RESULTS SHOWED THAT A LARGE PORTION OF THE FATIGUE LIFE WAS CONSUMED IN INITIATING THE CRACK. /FHWA/

  • Supplemental Notes:
    • Contract No 1HR-64
  • Corporate Authors:

    Illinois Department of Transportation

    2300 S. Dirksen Parkway
    Springfield, IL  USA  62764

    Department of Transportation

    1200 New Jersey Avenue, SE
    Washington, DC  USA  20590

    Federal Highway Administration

    1200 New Jersey Avenue, SE
    Washington, DC  USA  20590
  • Authors:
    • Ekstrom, D H
    • Munse, W H
  • Publication Date: 0

Media Info

  • Pagination: 90 p.

Subject/Index Terms

Filing Info

  • Accession Number: 00208045
  • Record Type: Publication
  • Source Agency: Federal Highway Administration
  • Files: TRIS, USDOT
  • Created Date: Jun 18 1972 12:00AM