ON LARGE-SCALE PLASTICITY EFFECTS IN FATIGUE CRACK PROPAGATION

The correlation between the rate of fatigue crack growth and the stress-intensity factor seems to be well established in the linear elastic range where the size of the plastic zone is small relative to other critical dimensions. However, for large scale yielding in the elastic-plastic region as well as for fully plastic behavior, crack growth relationships have as yet not been as well established. It is the purpose of the present paper to explore possible analytical expressions for fatigue crack growth for such cases involving large-scale plasticity effects. The approach is based upon the use of an assumed relationship between the crack opening displacement as given by Bilby, Cottrell and Swinden and the rate of fatigue crack growth.

• Supplemental Notes:
  • Prepared in cooperation with Kyoto Univ. (Japan). Dept. of Mechanical Engineering II.
• Corporate Authors:

  University of Connecticut, Storrs

  Department of Metallurgy
  Storrs, CT  United States  06268

  Air Force Office of Scientific Research

  Bolling AFB
  Washington, DC  United States  20332
• Authors:
  • McEvilly, A J
  • Beukelmann, D
  • Tanaka, K
• Publication Date: 1974-8

Media Info

• Pagination: 16 p.

Subject/Index Terms

• TRT Terms: Cracking; Fatigue cracking; Fracture mechanics; Stresses
• Uncontrolled Terms: Crack propagation; Stress intensity factors
• Subject Areas: Marine Transportation; Materials;

Filing Info

• Accession Number: 00095108
• Record Type: Publication
• Source Agency: National Technical Information Service
• Report/Paper Numbers: UC-MET-2-1974 Intrm Rpt.
• Contract Numbers: AF-AFOSR-2703-74
• Files: TRIS
• Created Date: May 29 1975 12:00AM