Time-resolved 3d temperature/displacement measurements for investigating the fire behaviour of composite materials

Abstract

International audienceFire-induced decomposition of composite materials involves complex and coupled multi-physics phenomena experienced for instance in standard tests (cone calorimeter, FAR 25.856(b):2003 and ISO 2685:1998(e)). It is proposed to address this issue in a simplified laboratory facility using a gas burner embedded with coupled measurement techniques to assess all desired physical quantities. A focus is given in this study on non-intrusive (no coating required) DIC and infra-red thermography measurements. Displacement and temperature of the unexposed surface were accurately measured as a function of time to investigate the 3D fire behaviour of a composite laminate used in the aircraft industry. Those complementary measurements offer relevant and correlated information to identify the damage mechanisms