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Publications
Alizadeh, F., Sutherland, L.S. and Guedes Soares, C. (2016), “Effect of vacuum bag pressure on the flexural properties of GFRP composite laminates”, Maritime Technology and Engineering 3, Guedes Soares, C. & Santos T. A., (Eds.), Taylor & Francis Group, London, UK, pp. 429-434
A study of the influence of vacuum level on fibre fraction and flexural properties has been completed using burn-off and three-point bending tests. Surprisingly, neither the fibre volume fraction nor the flexural behaviour were seen to be dependent on vacuum level. Initial failure due to top ply delamination did not affect the very linear flexural stiffness response of the material. There was variation in material properties of different types of specimens, but no consistent correlation with material properties between the warp and weft directions was seen. It is thought that ‘operator’ (laminator) variation, both between and within panels, was more important than other factors for this study. Further work is needed to investigate the effects of vacuum level on larger panels, and to try to systematically quantify and investigate the effects of operator variation on the material properties.
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