Determination of Thermal Diffusivity of Austenitic Steel Using Pulsed Infrared Thermography

Abstract

The simple method of determining thermal diffusivity of solid materials at room temperature using the pulsed infrared thermography (IRT) is proposed. The theoretical basis of the method and experimental results are presented. The study was conducted on austenitic steel 316L. Theobtained results show that the thermal diffusivity value of the tested steel determined by means of pulsed infrared thermography is very approximate to the values given in the literature, obtained by using more complicated methods. The differences between these values are 0.5%.

Keywords

• thermal diffusivity
• pulsed infrared thermography
• heat conduction
• austenitic steel