EFFECT OF SECTION SIZE ON THE FATIGUE CRACK GROWTH RATE OF A516-60 PRESSURE - VESSEL STEEL

Studies of the fatigue crack growth rate of A516-60 pressure-vessel steel indicate no section-size effect in stress-relieved specimens ranging in thickness from 6.35-50.8 mm (0.25 to 2.0 in.). A regression curve equation for all thicknesses, relating cyclic crack growth rate (da/dN) to crack-tip stress-intensity factor range (delta K) is obtained. The significance of these results is discussed in the light of current engineering practice and of previous studies of size effects in fatigue crack propagation. (Author)

• Corporate Authors:

  Naval Research Laboratory

  4555 Overlook Avenue, SW
  Washington, DC  United States  20375-5320
• Authors:
  • Sullivan, A M
  • Crooker, T W
• Publication Date: 1976-8-4

Media Info

• Pagination: 16 p.

Subject/Index Terms

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

Filing Info

• Accession Number: 00147771
• Record Type: Publication
• Source Agency: National Technical Information Service
• Report/Paper Numbers: NRL-8004 Final Rpt.
• Files: TRIS
• Created Date: Feb 16 1977 12:00AM