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

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Journal Title
Journal ISSN
Volume Title
A1 Alkuperäisartikkeli tieteellisessä aikakauslehdessä
Date
2019-06-12
Major/Subject
Mcode
Degree programme
Language
en
Pages
Series
Materials, Volume 12, issue 12
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.
Description
Keywords
Carbon fiber composite, Defect, Experimental mechanics, Modelling, Multiscale
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Citation
Antin , K N , Laukkanen , A , Andersson , T , Smyl , D & Vilaça , P 2019 , ' A multiscale modelling approach for estimating the effect of defects in unidirectional carbon fiber reinforced polymer composites ' , Materials , vol. 12 , no. 12 , 1885 . https://doi.org/10.3390/ma12121885