Effect of Fabric Weave Geometry and Strand Orientation on Mode I Interlaminar Toughness of Glass-Epoxy Laminates

Abstract:

nterlaminar toughness of glass-epoxy laminates subjected to Mode I quasi static loading was investigated. The influence of reinforcement geometry on G_Ic was focused. Six different laminates reinforced with INTERGLAS 2/2 twill fabrics of three different areal densities and two strand orientations, θ, were tested. The considered fabric areal densities were 390g/m², 280g/m² and 163g/m², and strand orientations θ=0°/90° and θ=±45°. For laminates with θ=±45° strand orientation a statistically significant difference in the means of the interlaminar toughness G_Ic was noticed for all three laminates i.e. reinforced with the fabrics of areal densities 163 g/m² and 280 g/m², and 390 g/m². For laminates with strand orientation θ=0°/90° a significant difference in Gic means was noticed for laminates with fabrics of areal densities 163 g/m² and 280 g/m², and 280 g/m² and 390 g/m²_, only. For groups of laminates reinforced with a particular fabric type a statistically significant difference in the means of G_Ic was found each time when laminates differed in the strand arrangement θ regardless the way the G_Ic values were calculated. Fracture analysis done with the help of a SEM did not explained the observed differences in G_Ic values.

• Periodical: Key Engineering Materials (Volumes 577-578)
• Pages: 181-184
• DOI: https://doi.org/10.4028/www.scientific.net/KEM.577-578.181
• Online since: September 2013
• Authors: Piotr Czanocki, Bogdan Hernik
• Keywords: Fabric, Interlaminar Toughness, Laminates

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