A 2d/3d Vision System to Quantitatively Assess the Evolution of a Protective Layer on Flame Retarded Polymers.

Dos Santos Barrettino, Rosane Moura and Floris, Moreno and Banfi, Michele and Marchizza, Matteo and Tognola, Guido and Malucelli, Giulio and Castrovinci Cercatore, Andrea (2014) A 2d/3d Vision System to Quantitatively Assess the Evolution of a Protective Layer on Flame Retarded Polymers. In: FRT14: Fire Retardant Technologies 2014, April 14-17 2014, Preston, United Kingdom.

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Abstract

This work describes an imaging acquisition system developed to monitor the surface of a burning polymer. The apparatus records a video of the burning surface, tracking the evolution of its features, i.e. 2D/3D surface texture and char volume expansion. The system minimizes the disturbances of the flames on the image sensors. It consists of 2D/3D cameras with customized lighting, acquiring images of the burning specimen. Surface swelling, the formation of cracks, and the carbonization front growth rate are continuously monitored and subsequently analysed by a dedicated software. The UL94 test procedure has been used as test bed for the system. The processed images allow identifying and quantitatively measuring key features of the protective layer that cannot be monitored by the operator’s naked eye.

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