A flash characterisation method for thin cylindrical multilayered composites based on the combined front and rear faces thermograms

Abstract

The flash method, known as the most used experimental technique to measure the thermal diffusivity of solids, has been adapted to cylindrical highly diffusive and heterogeneous multilayered samples. In order to overcome the heterogeneities issue and give a more accurate estimation of the sample thermal properties, the front face and rear face thermal responses have been simultaneously recorded using an infrared camera. A homogeneous monolithic SiC cylinder has been tested to validate this experimental method which has finally been applied to 2D bi-layered SiCf/SiC cylinders used for nuclear fuel cladding.

Modeling and Measuring Thermodynamic and Transport Thermophysical Properties: A Review

“…Duquesne et al [57] adapted the flash method to cylindrical, highly diffusive, and heterogeneous multilayered samples. The front-face and rear-face thermal responses were simultaneously recorded using an IR camera.…”

“…The front-face and rear-face thermal responses were simultaneously recorded using an IR camera. A homogeneous monolithic SiC cylinder was tested to validate the method [57].…”