☆ 4.6 Article

Strong influence of the surrounding gas in laser-spot lock-in thermography

JOURNAL OF APPLIED PHYSICS (2023)

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On the Thermal Characterization of Insulating Solids Using Laser-Spot Thermography in a Front Detection Configuration

Adrian Bedoya et al.

Summary: The laser-spot active lock-in infrared thermography technique is an advantageous method for measuring the thermal diffusivity and conductivity of thermal insulators simultaneously by utilizing heat losses through conduction. This method allows for shorter measurement time, thicker samples, and lower excitation powers compared to traditional techniques. It also reveals interesting behavior related to thermal wave wavelength. Furthermore, this technique has potential for characterizing anisotropic samples.

INTERNATIONAL JOURNAL OF THERMOPHYSICS (2023)

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Article Materials Science, Characterization & Testing