Numerical Simulation of Thermal Ageing Effect on Fracture Behavior for CF8A Cast Stainless Steels under Very Low Cyclic Loading Conditions

Gyo Geun Youn, Hyun Suk Nam, Yun Jae Kim, Jin Won Kim

研究成果: Conference article査読

抄録

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.

本文言語English
ページ(範囲)1297-1304
ページ数8
ジャーナルProcedia Structural Integrity
13
DOI
出版ステータスPublished - 2018
外部発表はい
イベント22nd European Conference on Fracture, ECF 2018 - Belgrade, Serbia
継続期間: 2018 8月 252018 8月 26

ASJC Scopus subject areas

  • 機械工学
  • 材料力学
  • 土木構造工学
  • 材料科学(全般)

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