Tension-Tension Fatigue Behavior and Residual Strength of 2.5D SiO2f/SiO2at High Temperature

2.5D SiO 2f /SiO 2 is extensively utilized in the aerospace industry. The performance under high-temperature cyclic fatigue is paramount importance for potential applications. This study examines the fatigue behavior at service temperatures, alongside the residual strength. Findings reveal that temperature elevation enhances both the tensile strength and fatigue resistance. Under reduced fatigue loads, specimens exhibited signs of fatigue strengthening, demonstrating augmented strength and stiffness compared to their initial state. However, the interfacial bond strength in these specimens decreased, leading to a shift in fracture behavior from purely brittle to a combined fracture mode.