A multiscale modelling approach for estimating the effect of defects in unidirectional carbon fiber reinforced polymer composites

Kim Niklas Antin, Anssi Laukkanen, Tom Andersson, Danny Smyl, Pedro Vilaça (Corresponding Author)

Research output: Contribution to journalArticleScientificpeer-review

3 Citations (Scopus)

Abstract

A multiscale modelling approach was developed in order to estimate the effect of defects on the strength of unidirectional carbon fiber composites. The work encompasses a micromechanics approach, where the known reinforcement and matrix properties are experimentally verified and a 3D finite element model is meshed directly from micrographs. Boundary conditions for loading the micromechanical model are derived from macroscale finite element simulations of the component in question. Using a microscale model based on the actual microstructure, material parameters and load case allows realistic estimation of the effect of a defect. The modelling approach was tested with a unidirectional carbon fiber composite beam, from which the micromechanical model was created and experimentally validated. The effect of porosity was simulated using a resin-rich area in the microstructure and the results were compared to experimental work on samples containing pores.

Original languageEnglish
Article number2885
Number of pages15
JournalMaterials
Volume12
Issue number12
DOIs
Publication statusPublished - 12 Jun 2019
MoE publication typeA1 Journal article-refereed

Keywords

  • Carbon fiber composite
  • Defect
  • Experimental mechanics
  • Modelling
  • Multiscale

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