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

O. Rodera, T. Pärnänen, J. Jokinen, M. Lindgren, E. Sarlin, M. Kanerva

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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 languageEnglish
Article number113508
Number of pages15
JournalComposite Structures
Publication statusPublished - 15 Mar 2021
Publication typeA1 Journal article-refereed


  • 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


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