Computational and experimental research on infrared trace by human being contact

Area of Science:

• Physics
• Thermal Engineering
• Infrared Technology

Background:

• Quantitative analysis of human infrared radiation is lacking for thermal trace detection.
• Existing methods do not fully address the complexities of thermal signatures left by human contact.

Purpose of the Study:

• To develop an analytical model for human body's infrared thermal trace.
• To investigate the impact of body temperature on material thermal parameters.
• To enhance infrared detecting, scouting, and tracking technologies.

Main Methods:

• Finite-element simulation and experimental validation.
• Analysis of heating and cooling processes during body contact and removal.
• Investigation using infrared physics and heat transfer theory.

Main Results:

• An analytical model for infrared traces of body contact was successfully developed.
• Material thermal parameters were found to be significantly impacted by temperature.
• Sensitivity analysis of thermal parameters, distribution, and thermograph contrast was performed.

Conclusions:

• The developed model accurately predicts infrared thermal traces.
• Experimental results validate the model and highlight temperature's effect on material properties.
• This research provides a foundation for advancements in infrared trace technology.