A Nonlinear Fracture Mechanics Approach to the Growth of Small Cracks
Abstract
Using linear-elastic and nonlinear fracture mechanics, many investigators have tried to explain the growth of small cracks in plates and at notches. These studies have concentrated on the growth of small cracks ranging in length from .01 to 1mm. On the basis of linear-elastic fracture mechanics, the small cracks grew much faster than would be predicted from large crack data. Nonlinear fracture mechanics, in particular the J-integral concept, and an empirical length parameter have been used to correlate small and large crack- growth rate data. The physical interpretation of the length parameter, however, is unclear.
Document Details
- Document Type
- Technical Report
- Publication Date
- Apr 01, 1983
- Accession Number
- ADP001605
Entities
People
- J. C. Newman Jr.
Organizations
- National Aeronautics and Space Administration