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 Jan 1 |
| Event | 22nd European Conference on Fracture, ECF 2018 - Belgrade, Serbia Duration: 2018 Aug 25 → 2018 Aug 26 |
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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
- Materials Science(all)
Cite this
Numerical Simulation of Thermal Ageing Effect on Fracture Behavior for CF8A Cast Stainless Steels under Very Low Cyclic Loading Conditions. / Youn, Gyo Geun; Nam, Hyun Suk; Kim, Yun-Jae; Kim, Jin Won.
In: Procedia Structural Integrity, Vol. 13, 01.01.2018, p. 1297-1304.Research output: Contribution to journal › Conference article
}
TY - JOUR
T1 - Numerical Simulation of Thermal Ageing Effect on Fracture Behavior for CF8A Cast Stainless Steels under Very Low Cyclic Loading Conditions
AU - Youn, Gyo Geun
AU - Nam, Hyun Suk
AU - Kim, Yun-Jae
AU - Kim, Jin Won
PY - 2018/1/1
Y1 - 2018/1/1
N2 - 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.
AB - 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.
KW - C(T) test
KW - Finite element method
KW - Fracture toughness
KW - Low cycle fatigue
KW - Multi-axial fracture strain energy
KW - Themal ageing constant
UR - http://www.scopus.com/inward/record.url?scp=85064632635&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=85064632635&partnerID=8YFLogxK
U2 - 10.1016/j.prostr.2018.12.274
DO - 10.1016/j.prostr.2018.12.274
M3 - Conference article
VL - 13
SP - 1297
EP - 1304
JO - Procedia Structural Integrity
JF - Procedia Structural Integrity
SN - 2452-3216
ER -