EFFECT OF TENSION-COMPRESSION CYLING ON FATIGUE CRACK GROWTH IN HIGH-STRENGTH ALLOYS

Virtually all of the fatigue crack propagation data reported in the literature for structural alloys are generated under simple zero-tension cycling. The direct application of this data to problems involving large welded structures subjected to operating stress cycles approaching fully-reversed tension-compression is questionable. The present study shows that the compression portion of fully-reversed tension-compression cycling can contribute substantially to fatigue crack growth rates in plate-thickness, medium-to-high-strength alloys. Data from several alloys show a 50 percent increase in fatigue crack growth rates due to tension-compression cycling. The implications of these findings and methods for applying the results of this study are discussed. (Author)

  • Corporate Authors:

    Naval Research Laboratory

    Stennis Space Center, MS  USA  39529-5004
  • Authors:
    • Crooker, T W
  • Publication Date: 1971-1-4

Media Info

  • Pagination: 11 p.

Subject/Index Terms

Filing Info

  • Accession Number: 00016684
  • Record Type: Publication
  • Source Agency: National Technical Information Service
  • Report/Paper Numbers: NRL-7220
  • Files: TRIS
  • Created Date: Aug 27 1973 12:00AM