Roentgenoscopy of laser-induced projectile impact testing

Area of Science:

• Materials Science and Engineering
• Physics
• Mechanical Engineering

Background:

• Understanding material behavior under dynamic loading is crucial for various engineering applications.
• Microscale impacts present unique challenges for characterization due to their speed and scale.
• Existing techniques may lack the resolution or in situ capabilities for detailed analysis.

Purpose of the Study:

• To propose and validate a novel technique for studying material dynamics under high-velocity micro-particle impacts.
• To leverage synchrotron imaging for in situ observation of these dynamic events.
• To investigate strain and energy dissipation mechanisms during microscale impacts.

Main Methods:

• Development and validation of Laser-induced projectile impact testing (LIPIT).
• Integration of LIPIT with synchrotron radiation imaging for high-resolution, time-resolved observation.
• Conducting two validation experiments to demonstrate the technique's capabilities.

Main Results:

• Successful realization of LIPIT with synchrotron imaging at the Beijing Synchrotron Radiation Facility.
• Achieved spatial resolution of 10 µm and temporal resolution of 33.4 µs.
• Demonstrated the technique's potential for roentgenoscopy of dynamic material properties during impacts.

Conclusions:

• LIPIT combined with synchrotron imaging is a validated, powerful tool for microscale dynamic material analysis.
• The technique provides in situ observation of particle infiltration and material response.
• This innovative approach opens new research avenues for studying dynamic material properties.