Chemical ageing effects on the ply and laminate strength of a filament wound cross-ply GFRP
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A1 Alkuperäisartikkeli tieteellisessä aikakauslehdessä
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en
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15
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Composite Structures, Volume 260
Abstract
This work presents a numerical approach to multi-routines based on experiments, and, with a target to analyse strength of a cross-ply glass fibre reinforced plastics (GFRP) composite after immersion in sulphuric acid solution under pressure (5% H2SO4 solution, 95 °C, 15 bar). Two alternative vinyl ester resins (bisphenol A diglycidyl ether and epoxy phenol novolac) were investigated. After 0.5, 1, 1.5 and 2 years of conditioning, the specimens were mechanically tested. The multi-scale definition of the material system and its virtual conditioning were performed in a finite element (FE) model. The Hashin 3D failure criterion was implemented by coding the UMAT subroutine when using the Abaqus software. The experimental results demonstrated better performance of the bisphenol A vinyl ester resin-based GFRP when a thin barrier layer is used. The numerical results indicated that the shear strength property was the most susceptible at weak zones to present a tendency for degradation after one year of conditioning.Description
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Rodera, O, Pärnänen, T, Jokinen, J, Lindgren, M, Sarlin, E & Kanerva, M 2021, 'Chemical ageing effects on the ply and laminate strength of a filament wound cross-ply GFRP', Composite Structures, vol. 260, 113508. https://doi.org/10.1016/j.compstruct.2020.113508