Chemical ageing effects on the ply and laminate strength of a filament wound cross-ply GFRP

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Journal Title
Journal ISSN
Volume Title
A1 Alkuperäisartikkeli tieteellisessä aikakauslehdessä
Date
2021-03-15
Major/Subject
Mcode
Degree programme
Language
en
Pages
15
Series
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
Keywords
ageing, failure criteria, finite element modelling, GFRP, vinyl ester
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Citation
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