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Experimental investigation and numerical modelling of the fire performance for epoxy resin carbon fibre composites of variable thicknesses

Fateh, Talal, Zhang, Jianping, Delichatsios, Michael. A and Rogaume, T. (2017) Experimental investigation and numerical modelling of the fire performance for epoxy resin carbon fibre composites of variable thicknesses. Fire and Materials, 41 . pp. 307-322. [Journal article]

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URL: http://dx.doi.org/10.1002/fam.2381

DOI: doi:10.1002/fam.2381

Abstract

This paper applies a unique integrated approach to determine the flammability properties of a composite material (epoxy with carbon fibre) and compares its fire behaviour at two different thicknesses (2.1 and 4.2 mm) by performing small scale (thermo-gravimetric analysis (TGA)/Fourier transform infrared radiation) and meso-scale tests (cone calorimeter). For small-scale tests, experiments were conducted in nitrogen using TGA coupled to gas analysis by Fourier transform infrared radiation. These results allow the determination of thermal stability, main degradation temperature and main gaseous emissions released during the thermal degradation. For meso-scale tests, experiments were carried out using a cone calorimeter with sample dimensions of 100 × 100 mm at five heat fluxes (30, 40, 50, 60 and 70 kW/m2). The results show that the ignition time increases with an increase in the thickness of the material. Relative hazard classification of the fire performance of the current composites has also been compared with other materials using parameters obtained elsewhere. In addition, the effective ignition, thermal and pyrolysis properties obtained from the ignition and mass loss rate experiments for the 4.2-mm thick samples were used in a numerical model for pyrolysis to predict well ignition times, back-surface temperatures and mass pyrolysis rates for all heat fluxes as well as for the 2.1-mm thick samples. Note that the ignition temperature obtained in the cone agrees with the main degradation temperature in the TGA. The flammability properties deduced here can be used to predict the heat release rate for real fire situations using CFD modelling.

Item Type:Journal article
Keywords:cone calorimeter; TGA; epoxy composite; thermal degradation; pyrolysis; gaseous emissions; FTIR
Faculties and Schools:Faculty of Art, Design and the Built Environment
Faculty of Art, Design and the Built Environment > School of the Built Environment
Research Institutes and Groups:Built Environment Research Institute
Built Environment Research Institute > Fire Safety and Engineering Research and Technology Centre (FireSERT)
ID Code:36260
Deposited By: Dr Talal Fateh
Deposited On:14 Nov 2016 09:27
Last Modified:29 Jun 2017 22:23

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