EFFECT OF REPEATED LOADS ON THE LOW TEMPERATURE FRACTURE BEHAVIOR OF NOTCHED AND WELDED PLATES

The influence of repeated loadings on the susceptibility of weldments to fracture in a brittle manner is studied for an ABS-Class C Steel. The test members have consisted primarily of 12,24 and 36 in. wide notched-and- welded specimens that, at low temperatures, have been known to provide low-stress brittle fractures. The repeated loads or loading history are found to affect the fracture behavior of the weldments. In all but one instance the fracture stresses obtained for the notched-and-welded wide plates were greater than the stresses to which the members had been subjected during the repeated loadings. Furthermore, the repeated load- ings appeared to eliminate the two-stage fractures ob- served in some of the tests of as-welded specimens. This latter condition is in general desirable, but only if the fracture stress is raised to a high-stress level.

  • Supplemental Notes:
    • Project name is Low-Cycle Fatigue
  • Corporate Authors:

    Ship Structure Committee

    National Academy of Science, 2101 Constitution Avenue, NW
    Washington, DC  USA  20418

    Naval Ship Engineering Center

    3700 East-West Highway
    Hyattsville, MD  USA  20782
  • Authors:
    • Munse, W H
    • Cannon, J P
    • Kiefner, J F
  • Publication Date: 1968-10

Media Info

  • Features: Figures; Photos; References; Tables;
  • Pagination: 24 p.

Subject/Index Terms

Filing Info

  • Accession Number: 00007512
  • Record Type: Publication
  • Report/Paper Numbers: SSC-188 Final Rpt
  • Contract Numbers: Nobs 88283
  • Files: TRIS
  • Created Date: Dec 22 1972 12:00AM