Abstract
The most dangerous fracture of creep-fatigue is caused by multiple small cracks which initiate and grow inside of materials. In this study, a numerical simulation method is proposed on the initiation and growth of inner small cracks on the basis of the experimental observation of a Type 304 stainless steel during creep-fatigue in order to elucidate the evolution process of damage. The model proposed in this study is similar to that for creep-fatigue intergranular fracture of surface cracking type which has already been reported by the authors. It is based on a discrete model of grain boundaries having random shape and sizes with random fracture resistances and a Monte Carlo simulation combined with a damage mechanics concept. As a result, the spatial and temporal distributions of inner small cracks are successfully evaluated by the simulation.
| Original language | English |
|---|---|
| Pages (from-to) | 84-89 |
| Number of pages | 6 |
| Journal | journal of the society of materials science, japan |
| Volume | 44 |
| Issue number | 496 |
| DOIs | |
| Publication status | Published - 1995 |
| Externally published | Yes |
Keywords
- Crack growth
- Crack initiation
- Creep
- High temperature fatigue
- Inner small crack
- Monte Carlo simulation
- Type 304 stainless steel
ASJC Scopus subject areas
- Materials Science(all)
- Condensed Matter Physics
- Mechanics of Materials
- Mechanical Engineering