Experimental study demonstrates rapid thermal diffusivity measurements in transparent glasses and polymers, highlighting high precision without needing absolute temperature data.
A new thermographic express technique for determining the thermal diffusivity of transparent materials and optical components is described, and results from testing it on glasses and polymeric materials are presented. An algorithm for deriving the thermal diffusivity coefficient from the raw data eliminates the need to determine the absolute temperatures and absorbed energy of the incident radiation flux, ensuring a random error of less than 2–3%.
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Golovin et al. (2020) studied this question.
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