Abstract
In this study, the fatigue crack propagation behavior in the stress interaction field between two different fatigue cracks is studied by experiment and finite element analysis. In the experiment, the offset distance between two cracks and the applied stress are varied to create different stress interaction fields. The size of the plastic zone area is used to examine the crack propagation path and rate. Three types of crack propagation in the interaction field were found by experiment, and the crack propagation behavior of two cracks was significantly changed as different stresses were applied. The size of the plastic zone obtained by finite element analysis can be used to explain crack propagation behavior qualitatively.
| Original language | English |
|---|---|
| Pages (from-to) | 225-231 |
| Number of pages | 7 |
| Journal | Experimental Mechanics |
| Volume | 41 |
| Issue number | 3 |
| DOIs | |
| Publication status | Published - 2001 Sept |
Keywords
- Crack interaction
- Crack propagation
- Fatigue life
- Finite element analysis
- Plastic zone
ASJC Scopus subject areas
- Aerospace Engineering
- Mechanics of Materials
- Mechanical Engineering