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.
Original language | English |
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Article number | 113508 |
Number of pages | 15 |
Journal | Composite Structures |
Volume | 260 |
DOIs | |
Publication status | Published - 15 Mar 2021 |
Publication type | A1 Journal article-refereed |
Keywords
- ageing
- failure criteria
- finite element modelling
- GFRP
- vinyl ester
Publication forum classification
- Publication forum level 2
ASJC Scopus subject areas
- Ceramics and Composites
- Civil and Structural Engineering