Abstract
In order to study the influence of microstructural texture on the growth of short fatigue cracks in metals, the nonequilibrium statistical theory of fatigue fracture correlating a microscopic mechanism with the macroscopic properties is modified in consideration of microstructural features of a material such as grain boundaries, thereby can be used to interpret rationally the experimental data of short fatigue crack growth and long fatigue crack growth. The modified nonequilibrium statistical theory relates the growth of cracks with a dislocation mechanism to simulate short fatigue crack growth with the long fatigue crack growth behaviour and predict the fatigue crack growth rates throughout the fatigue lifetime. The results are finally compared with that of other fatigue theories.
| Original language | English |
|---|---|
| Pages (from-to) | 240-245 |
| Number of pages | 6 |
| Journal | Journal of Beijing Institute of Technology (English Edition) |
| Volume | 10 |
| Issue number | 3 |
| Publication status | Published - Sept 2001 |
Keywords
- Fluctuation growth rate
- Long fatigue crack
- Nonequilibrium statistical theory
- Short fatigue crack