LOAD INTERACTION EFFECTS ON FATIQUE CRACK GROWTH IN TI-6A1-AV ALLOY

The importance of delay, or retardation in the rate of fatigue crack growth, produced by load interactions in variable amplitude loading, on the accurate prediction of fatigue lives of engineering structures has been well recognized for some time. Heretofore, only a few simple loading combinations or spectra have been examind systematically. In this investigation the effects of a broad range of loading variables on delay in fatigue crack growth at room temperature are examined for a mill annealed Ti-6A1-4V alloy. The results are used to estimate crack growth behavior under programmed loads.

• Corporate Authors:

  National Aeronautics and Space Administration

  400 Maryland Avenue, SW
  Washington, DC  United States  20546
• Authors:
  • Wei, R P
  • Shih, T T
  • Fitzgerald, J H
• Publication Date: 1973-4

Media Info

• Features: References;
• Pagination: 27 p.

Subject/Index Terms

• TRT Terms: Cracking; Fatigue (Mechanics); Fatigue cracking; Fatigue tests
• Uncontrolled Terms: Crack propagation; Fatigue life
• Subject Areas: Marine Transportation; Materials;

Filing Info

• Accession Number: 00050165
• Record Type: Publication
• Source Agency: Engineering Index
• Report/Paper Numbers: CR-2239 Contr Rpt
• Files: TRIS
• Created Date: Nov 14 1973 12:00AM