Abstract
In order to achieve the objective of securing the reliability of high-temperature components, it is necessary to establish a method for predicting the remaining life of their materials subjected to severe creep-fatigue damage. It was reported by the authors that multiple small cracks initiated along grain boundaries on the specimen surface at the very early stage of life in creep-fatigue and their growth and coalescence formed the main crack which induced the failure. Moreover, the process of small crack initiation and growth showed random behavior due to microstructural inhomogeneity. A stochastic model was proposed and the failure process was numerically simulated by means of the Monte Carlo method. This paper provides a scheme of the small-crack-simulation-method for the evaluation of remaining life of the materials in high-temperature components, which is an integration of our previous studies and is summarized in a flow chart.
| Original language | English |
|---|---|
| Pages (from-to) | 1732-1737 |
| Number of pages | 6 |
| Journal | Transactions of the Japan Society of Mechanical Engineers Series A |
| Volume | 57 |
| Issue number | 540 |
| DOIs | |
| Publication status | Published - 1991 |
| Externally published | Yes |
Keywords
- Crack Initiation
- Crack Propagation (Crack Growth)
- Creep
- Creep-Fatigue
- Fatigue at High Temperature
- High-Temperature Component
- Life Assessment
- Life Prediction
- Numerical Simulation
- Remaining Life
- Small Crack
ASJC Scopus subject areas
- Materials Science(all)
- Mechanics of Materials
- Mechanical Engineering