Compressive softening and failure of basalt fibre composites in fire: Modelling and experimentation. (1st April 2017)

• Record Type: Journal Article
• Authors: Bhat, T.; Kandare, E.; Gibson, A.G.; Di Modica, P.; Mouritz, A.P.
• Is Part Of: Composite structures. Volume 165(2017)
• Page Start: 15
• Page End: 24
• Publication Date: 2017-04-01
• Subjects: Polymer matrix composites -- Thermomechanical behaviour -- Basalt fibre -- Fire; Composite construction -- Periodicals; Composites -- Périodiques; 624.18
• DOI: 10.1016/j.compstruct.2017.01.003
• Languages: English
• ISSNs: 0263-8223

Abstract

Abstract: In this study, the fire structural properties of a basalt fibre reinforced polymer laminate under compressive loading were investigated analytically and experimentally, and compared against an E-glass fibre composite with the same fibre content, ply orientation and polymer matrix. A thermal-mechanical model was used to compute the softening rate and failure stress of basalt fibre laminates which collapse, when loaded in compression, by either global buckling or material failure when exposed to fire. Fire structural measurements involving one-sided radiant heating with axial compressive loading were also performed. The measurements revealed that the softening behaviour and failure stress of the basalt fibre laminate were inferior to those of the glass fibre composite. Furthermore, the fire reaction properties, such as heat release rate and smoke density, were also less favourable for the basalt laminate. This appears to be mainly due to the thermal absorptivity of the basalt fibre laminate being higher, which causes it to heat up at a faster rate and reach higher temperatures when exposed to a radiant heat flux.