A 1 mm thick, 100 mm × 100 mm titanium plate coated with blackbody paint was locally heated using a halogen point heater.
The temperature distribution during heating was observed using a thermographic camera with an emissivity setting of 0.94. The blackbody coating equalizes surface emissivity and reduces measurement errors caused by reflections from the metal surface.
Titanium has a thermal conductivity of approximately 22 W/m·K and is characterized by slow heat diffusion. As a result, heat tends to concentrate around the heated area, forming localized high-temperature regions. This video visualizes the temperature rise and heat diffusion behavior during localized infrared heating using thermographic imaging.
By comparing the heat diffusion behavior of metals with different thermal conductivities, the influence of material properties on temperature distribution can be observed.
Infrared heating is widely used for localized heating, joining, drying, heat treatment, and temperature distribution evaluation in various industrial applications.
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