High spatial resolution infrared measurement method for transient temperature field based on 3D-SwinIR...

Area of Science:

• Materials Science
• Mechanical Engineering
• Geophysics

Background:

• Dynamic material failure is critical in mechanics and earthquake studies.
• Accurate, high-resolution temperature measurements during dynamic failure are challenging.
• Adiabatic shear bands' thermal fields require precise monitoring.

Purpose of the Study:

• To enhance spatial resolution for transient temperature field measurements during dynamic material failure.
• To develop and validate a novel multi-frame super-resolution method for high-speed infrared imaging.
• To improve the accuracy of temperature field measurements in dynamic events.

Main Methods:

• Developed a high-speed infrared detector system.
• Implemented a novel multi-frame super-resolution method (3D-SwinIR) utilizing 3D convolutional blocks and Swin Transformer.
• Evaluated the method using single structure and hat-shaped specimen experiments.

Main Results:

• Achieved high-quality super-resolution of high-speed infrared images.
• Increased spatial resolution by 37% in a single structure measurement.
• Reduced measurement errors for peak temperature (51%) and width (33%) in dynamic loading tests.

Conclusions:

• The 3D-SwinIR method significantly improves spatial resolution for transient temperature field measurements.
• This technique offers a high-resolution measurement approach for studying material dynamic thermal responses.
• The findings advance the understanding of dynamic failure mechanisms through precise thermal analysis.