An evaluation of the data on low-cycle fatigue of metals based on type of test, cyclic rate, stress concentration, crack propagation, material property change and method of analysis indicates that (a) there is presently no general analysis applicable to all low-cycle fatigue test con- ditions; (b) the shape of the load-time curve is an important factor in analyzing low-cycle fatigue tests; (c) the extent of the time effect on low-cycle fatigue behavior, particularly with respect to creep and crack propagation, still remains to be explored; (d) the use of strain rather than stress is more desirable in low-cycle fatigue studies of coupon-type specimens because of the plastic deformation that takes place during such tests; and (e) the fatigue hypotheses based on strain, although developed from limited data, exhibit good agreement with the test results and show promise of providing a good in- dication of low-cycle fatigue behavior for selected loading conditions.

  • Supplemental Notes:
    • Transmitted through Committee on Ship Structural Design, National Academy of Sciences. Buships No. NS-731-036.
  • Corporate Authors:

    Ship Structure Committee

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

    Bureau of Ships

    Washington, DC  United States 
  • Authors:
    • Yao, JTP
    • Munse, W H
  • Publication Date: 1961-10-31

Media Info

  • Features: Appendices; Figures; References;
  • Pagination: 30 p.

Subject/Index Terms

Filing Info

  • Accession Number: 00007505
  • Record Type: Publication
  • Report/Paper Numbers: SSC-137 Prog Rpt
  • Contract Numbers: NObs-72046
  • Files: TRIS
  • Created Date: Dec 22 1972 12:00AM