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Lookup NU author(s): Professor Geoff Gibson,
Mariano Otheguy Torres,
Professor Adrian Mouritz
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This paper reports elevated temperature mechanical property measurements on woven glass fibre/polypropylene composites. Tensile and compressive stress rupture measurements were made on 12 mm thick laminate exposed to 50 kW m−2 heat flux. Behaviour was qualitatively similar to that of thermosetting laminates, but compressive behaviour was significantly inferior, due to a poorer resin–matrix bond, and to the loss of compressive properties at temperatures above the melting point. COM-FIRE, a finite difference implementation of the Henderson Equation, was able to model the thermal and residual resin profiles in the laminate during fire exposure. The thermal predictions were used, in conjunction with the measured mechanical property data, to model changes in elastic properties and stress rupture behaviour in fire. Because of the non-linearity of the tensile stress–strain curves, a 3-parameter model was needed to describe behaviour. In contrast the compressive response could be modelled by a simpler 2-parameter or saw-tooth model.
Author(s): Gibson AG, Otheguy Torres ME, Browne TNA, Feih S, Mouritz AP
Publication type: Article
Publication status: Published
Journal: Composites Part A: Applied Science and Manufacturing
Print publication date: 12/05/2010
ISSN (print): 1359-835X
ISSN (electronic): 1878-5840
Notes: Special Issue on 10th Deformation & Fracture of Composites Conference: Interfacial interactions in composites and other applications
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