Laser induced high temperature thermal-mechanical-oxygen coupling experimental system and method.

Area of Science:

• Materials Science
• Mechanical Engineering
• Thermal Engineering

Background:

• High-temperature resistant materials require advanced testing under combined thermal, mechanical, and oxidation conditions.
• Traditional digital-image correlation struggles with clear imaging during laser heating.
• Simulating complex loads and aerobic environments is crucial for material development.

Purpose of the Study:

• To develop and validate a new experimental system for thermal-mechanical-oxidation coupling under laser heating.
• To overcome imaging challenges in laser-heated material testing.
• To facilitate the development of advanced high-temperature materials and coatings.

Main Methods:

• A laser heating system with Gaussian and flat-top modes was developed.
• Active illumination and optical filters were employed for clear digital-image correlation.
• A biaxial mechanical test machine and controllable flow field device were integrated.
• Radiation temperature measurement was utilized for precise thermal monitoring.

Main Results:

• The system achieves high temperature ranges and rapid heating rates.
• Clear imaging under laser heating conditions was successfully demonstrated.
• The system supports biaxial loading and controlled aerobic environments.
• Maximum heat flux densities reached 27.2 kW/cm² (uniform) and 105 kW/cm² (Gaussian).

Conclusions:

• The developed thermal-mechanical-oxidation coupling system is effective for high-temperature material testing.
• The system's capabilities are significant for advancing high-temperature resistant materials.
• This research provides a valuable tool for the development of thermal barrier coatings.