Residual stress and failure mechanism of Al2O3-8YSZ double-ceramic-layer TBCs under thermal cycling: A numerical simulation study

Key Points

• Failure mechanisms of Al2O3-8YSZ thermal barrier coatings were comprehensively analyzed.
• Significant residual stress was identified during thermal cycling, affecting durability.
• Numerical simulation provided insights into stress distributions and potential failure points in TBCs.
• These findings indicate the need for improved design strategies to enhance thermal cycling resilience.