Experimental facility dedicated to high temperatures thermophysical properties measurement: validation of the temperature measurement by multispectral method (original) (raw)

The knowledge of physical properties of metals above their melting point is essential regarding the numerical simulation of welding processes. The measurement of these properties requires a device able to heat a small sample up to 2 000 °C and an appropriate temperature measurement apparatus. This paper presents the development of an induction heating furnace which will be used to measure thermophysical properties of metallic samples, and an optical pyrometer composed of a five colors (visible and NIR) dedicated to steady-state and dynamic measurements. The optical bench is tested up to 1 200 °C using multiple classical bichromatic pyrometry.