On the Influence of the R-Ratio on Fatigue Crack Propagation,
Abstract
A model of the fatigue crack growth process based on crack opening displacement considerations has been previously applied successfully to crack growth under R=O type loading. (R is the ratio of the minimum to the maximum stress of a loading cycle). The present work extends the approach to include other R ratios. A comparison of experimental results indicates crack closure effects influence the crack growth behavior. A modification of the expression for crack growth to reflect crack closure is proposed. This expression is in better agreement with experiment. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- Feb 01, 1973
- Accession Number
- AD0763776
Entities
People
- A. J. Mcevily
- R. J. Donahue
- R. Kumble
Organizations
- University of Connecticut