Abstract
In this work, the tension–tension fatigue behavior of a woven SiC/SiC ceramic matrix composite with an environmental barrier coating is investigated under elevated temperatures up to 1300 °C. Experimental investigations reveal the fatigue failure mechanism for SiC/SiC CMCs with EBCs under on-axis and off-axis loading conditions, and the materials undergo cyclic softening throughout the loading history. A mechanism-based framework is proposed to interpret the fatigue behavior of CMCs through detailed fatigue experiment observations. Based on the decrease in the elastic modulus of the composites, a new fatigue damage model is developed to characterize the fatigue damage evolution and assess the fatigue life of woven SiC/SiC CMCs with EBCs. The good agreement between the proposed model and experimental data indicates that the damage model has the potential to describe complex thermomechanical damage of SiC/SiC CMCs with EBCs under thermomechanical loading.
Original language | English |
---|---|
Article number | 107584 |
Journal | International Journal of Fatigue |
Volume | 172 |
Issue number | July 2023 |
Early online date | 5 Apr 2023 |
DOIs | |
Publication status | Published - 6 Apr 2023 |
Bibliographical note
Funding Information:The present work is supported by the National Natural Science Foundation of China (NSFC) (Grant No. 52105165 , U2241238 ), and the Strategic Priority Research Program of Chinese Academy of Sciences (Grant No. XDA17030100 ).
Funding
The present work is supported by the National Natural Science Foundation of China (NSFC) (Grant No. 52105165 , U2241238 ), and the Strategic Priority Research Program of Chinese Academy of Sciences (Grant No. XDA17030100 ).
Keywords
- Damage evolution model
- Environmental barrier coating
- High temperature fatigue behavior
- Off-axis fatigue behavior
- SiC/SiC ceramic-matrix composites
- Thermomechanical fatigue
ASJC Scopus subject areas
- Modelling and Simulation
- General Materials Science
- Mechanics of Materials
- Mechanical Engineering
- Industrial and Manufacturing Engineering