Supersonic microparticle impact experiments on targets at temperatures approaching 2000 °C.

Area of Science:

• Materials Science
• Mechanical Engineering
• Physics

Background:

• Characterizing material behavior under extreme strain rates and temperatures is vital for high-speed applications.
• Existing testing methods often lack the capability to replicate these combined extreme conditions accurately.

Purpose of the Study:

• To develop and validate a novel laser-driven particle impact platform for high-temperature material testing.
• To enable controlled experiments at supersonic particle velocities and temperatures approaching 2000°C.

Main Methods:

• Modified a conventional laser-induced particle impact system with resistive heating and a specialized launch pad.
• Integrated an optically accessible portable vacuum chamber to prevent oxidation at elevated temperatures.
• Demonstrated system capabilities by studying the temperature-dependent impact cratering of POCO graphite.

Main Results:

• Successfully accelerated microparticles to supersonic velocities impacting targets at high temperatures.
• The integrated vacuum chamber effectively prevented material oxidation during testing.
• Observed and analyzed the temperature-dependent cratering behavior of POCO graphite.

Conclusions:

• The developed laser-driven impact platform provides a controlled environment for high-velocity, high-temperature material impact experiments.
• This capability supports critical research into material performance under extreme conditions.
• The system is suitable for investigating the thermomechanical response of materials in demanding applications.