Investigating laser-induced thermal responses of C/SiC composites within airflow conditions

Abstract

This study primarily investigates the thermal effects of high-energy laser irradiation on carbon fiber-reinforced silicon carbide (C/SiC) composites in an airflow environment. Experiments conducted within a wind tunnel at various power densities elucidate the impact of laser ablation on the material’s surface and rear temperatures, ablation depth, and morphology. The research highlights the intriguing thermal effects of high-energy laser on C/SiC materials under airflow conditions and introduces a novel effective thermal conductivity model that incorporates reaction mechanisms and by-product considerations. This model significantly enhances the accuracy in predicting temperature variations and ablation rates, offering critical insights into the thermal behavior of C/SiC composites under extreme conditions.

Keywords

• Thermal protection
• Effective thermal conductivity
• Airflow environment
• Thermal ablation
• High-energy laser