29/08/2012 Jana Faes Meso scale modeling of the mechanical properties of steel- reinforced epoxy PhD Symposium December 2012 Jana Faes Wim Van Paepegem.

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29/08/2012 Jana Faes Meso scale modeling of the mechanical properties of steel- reinforced epoxy PhD Symposium December 2012 Jana Faes Wim Van Paepegem Department of Materials Science and Engineering, Ghent University FACULTY OF ENGINEERING

05/12/2012 Jana Faes 2 STEEL FILAMENT EPOXY MATRIX YARN (BUNDLE OF FILAMENTS) Meso scale modeling of steel reinforced epoxy

05/12/2012 Jana Faes 3 Carbon and glass fibre are BRITTLE Steel fibres are DUCTILE ELASTIC deformations up to failure (brittle) failure is avoided in applications research limited to elastic regime PLASTIC deformations & necking before failing (future) applications might involve damage research must focus on damage & failure Meso scale modeling of steel reinforced epoxy

05/12/2012 Jana Faes 4 Meso scale modeling of steel reinforced epoxy filament-matrix debonding yarn-matrix delamination fibre necking plastic matrix deformation

05/12/2012 Jana Faes 5 Macro Meso Micro structural level yarn level fiber level weft yarn warp yarn ONE YARN fiber filaments CARBON WHEELS WEAVE UNIT CELL Meso scale modeling of steel reinforced epoxy

05/12/2012 Jana Faes 6 GOAL composite unit cell Meso scale modeling of steel reinforced epoxy homogenisation homogeneous unit cell DEMAND Unit cell must behave as if it were part of the material structure periodic boundary conditions QUESTION Will these periodic boundaries still apply when looking at damage?