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Characterisation and modelling of structural integrity of carbon fibre wing box laminate subject to fire

Lookup NU author(s): Gaetano La Delfa, Vincenzo Urso Miano, Professor Geoff Gibson

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Abstract

Delamination damage occurs in carbon fibre reinforced plastic (CFRP) as a result of fire exposure, followed by extensive resin decomposition and charring. The initial delaminations are detectable using portable ultrasonic equipment and appear to coincide with the onset of resin decomposition, as measured by thermogravimetric analysis (TGA). However, further work is needed to determine the exact temperature for permanent damage. The spread of delaminations through the structure correlates with a reduction in compressive strength which can be described using the 'two-layer' model. Temperature-dependent thermal properties, including anisotropic values of thermal conductivity, enabled the 3-D temperature field to be modelled using a finite element (FE) package. The high in-plane thermal conductivity of CFRP can result in indirect thermal damage in regions adjacent to the zone of fire exposure. © 2009 Institute of Materials, Minerals and Mining.

Publication metadata

Author(s): La Delfa G, Urso-Miano V, Gibson A

Publication type: Article

Publication status: Published

Journal: Plastics, Rubber and Composites

Year: 2009

Volume: 38

Issue: 9-10

Pages: 367-373

ISSN (print): 1465-8011

ISSN (electronic): 1743-2898

Publisher: Maney Publishing

URL: http://dx.doi.org/10.1179/146580109X12556471122848

DOI: 10.1179/146580109X12556471122848

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