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 |
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
- Materials Science(all)
- Mechanics of Materials
- Mechanical Engineering
- Industrial and Manufacturing Engineering