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In Situ Surface Temperature Measurement in a Conveyor Belt Furnace via Inline Infrared Thermography

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Optimal Material Search for Infrared Markers under Non-Heating and Heating Conditions.

Yuki Kubota¹, Yushan Ke², Tomohiko Hayakawa²

¹Graduate School of Information Science and Technology, The University of Tokyo, Hongo 7-3-1, Bunkyo-ku, Tokyo 113-8656, Japan.

Sensors (Basel, Switzerland)

|October 13, 2021

Summary

This study identifies optimal infrared markers for medium wave infrared imaging. Material choice depends on heat sources and reflection, with metal-insulator markers best for non-reflective heating, and paper markers for reflective heating.

Keywords:

heat sources infrared imaging infrared markers specular reflection

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Area of Science:

Materials Science
Optical Engineering
Thermal Imaging

Background:

Optimal markers for infrared imaging, especially with heat sources, are not well-established.
Accurate and detachable markers are needed for various applications in the medium wave infrared (MWIR) region.

Purpose of the Study:

To investigate optimal material combinations for infrared markers in the MWIR region.
To evaluate marker performance under different heating conditions and in the presence of reflection components.

Main Methods:

Systematic evaluation of 11 material combinations based on four defined requirements.
Testing marker characteristics under non-heating, hot-air heating, and optical radiation heating with reflection components.

Main Results:

Optimal marker material depends on the presence of specular reflection.
Metal-insulator markers are effective in non-heating and hot-air heating scenarios without reflections.
Printed copier paper markers show superior clarity during reflective heating from optical radiation sources.

Conclusions:

The selection of infrared markers must consider the specific thermal environment and optical conditions.
Findings support the development of adaptable infrared markers for structural health monitoring and multi-modal projection applications involving heat.