THE PREDICTION OF FATIGUE STRENGTH OF WELDED DETAILS

This report provides a means of estimating the stress concentration effects when predicting the fatigue life of several welded details. The results of an analytical study of the fatigue behavior of welded stiffeners and cover plates were compared with the test data reported in NCHRP Reports 102 and 147. The comparison indicated that the variation in test data could be accounted for by considering the probable variation in initial crack sizes and crack growth rates. The stress gradient correction factors developed for stiffeners and cover plates welded to beam flanges provide the necessary analytical tools for estimating the applicable stress intensity factors. In this study a lower bound crack shape relationship was utilized which was derived from cracks that formed at the weld toes of full size coverplated beams. /FHWA/

  • Supplemental Notes:
    • Sponsored by the Pennsylvania Department of Transportation. Prepared in cooperation with the Department of Transportation, Federal Highway Administration.
  • Corporate Authors:

    Lehigh University

    Fritz Engineering Laboratory
    Bethlehem, PA  USA  18015

    Pennsylvania Department of Transportation

    Bureau of Materials, Testing and Research, 1118 State State
    Harrisburg, PA  USA  17112
  • Authors:
    • Zettlemoyer, N
    • Fisher, J W
  • Publication Date: 1978-5

Media Info

  • Pagination: 98 p.

Subject/Index Terms

Filing Info

  • Accession Number: 00195596
  • Record Type: Publication
  • Source Agency: Federal Highway Administration
  • Report/Paper Numbers: FHWA-RD-79-S0850 Intrm Rpt., FCP 45F2-212
  • Contract Numbers: 7203
  • Files: TRIS, USDOT, STATEDOT
  • Created Date: Sep 15 1979 12:00AM