Abstract
In this paper, a method to predict the fracture toughness of thermally-aged CF8A under cyclic loading condition is proposed. The FE damage model based on multi-axial fracture strain energy is applied for the prediction. The predicted results are compared with the experimental data of C(T) specimens. The multi-axial fracture strain energy of unaged CF8A can be obtained from tensile and C(T) data under monotonic loading condition. Then, the multi-axial fracture strain energy of aged CF8A can be determined by introducing the concept of thermal ageing constant "C". From the determined multi-axial fracture strain energy of aged CF8A, the fracture toughness of aged CF8A is predicted under monotonic and cyclic loading condition. The predicted results show good agreement with experimental data.
| Original language | English |
|---|---|
| Pages (from-to) | 1297-1304 |
| Number of pages | 8 |
| Journal | Procedia Structural Integrity |
| Volume | 13 |
| DOIs | |
| Publication status | Published - 2018 |
| Event | 22nd European Conference on Fracture, ECF 2018 - Belgrade, Serbia Duration: 2018 Aug 25 → 2018 Aug 26 |
Bibliographical note
Funding Information:This research was supported by National Research Foundation of Korea(NRF) funded by the Ministry of Science, ICT and Future Planning. (NRF-2017R1A2B2009759)
Publisher Copyright:
© 2018 The Authors.
Keywords
- C(T) test
- Finite element method
- Fracture toughness
- Low cycle fatigue
- Multi-axial fracture strain energy
- Themal ageing constant
ASJC Scopus subject areas
- Mechanical Engineering
- Mechanics of Materials
- Civil and Structural Engineering
- General Materials Science