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Article dans une revue

Characterization of 3D morphology and microcracks in composites reinforced by multi-axial multi-ply stitched preforms

Abstract : The micro-structure of polymer matrix composites reinforced by multi-axial multi-ply stitched carbon preforms and manufactured by liquid resin infusion is analyzed. The stitching induces deviations in fibre placement and creates openings which become resin-rich regions after the resin infusion. Characterization of the size and shape of the resin-rich regions of composites with different stitching yarn size and tightness and various stacking sequences has been performed by 2D metallographic micrography and X-ray microtomography. The resin-rich region volume was estimated at roughly 3.0 ± 0.5% of the material volume. The resin-rich regions constitute about 9% of the resin in the entire composite, whose fibre volume fraction is close to 65%. X-ray microtomography was successfully used to characterize the 3D microcracks created by hygrothermal fatigue.
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https://hal.archives-ouvertes.fr/hal-00850041
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Soumis le : mercredi 8 septembre 2021 - 15:30:51
Dernière modification le : mercredi 8 septembre 2021 - 15:39:06

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Pierre-Jaques Liotier, Alain Vautrin, Christine Delisée. Characterization of 3D morphology and microcracks in composites reinforced by multi-axial multi-ply stitched preforms. Composites Part A: Applied Science and Manufacturing, Elsevier, 2010, 41 (5), pp.653-662. ⟨10.1016/j.compositesa.2010.01.015⟩. ⟨hal-00850041⟩

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