Influence of interphase properties on the macroscopic response of single- and double-walled CNT/epoxy nanocomposites: a numerical study

David Weidt, Lukasz Figiel, Martin Buggy

    Research output: Chapter in Book/Report/Conference proceedingChapter

    Abstract

    A concept for improving the impact resistance of carbon fibre reinforced plastic (CFRP) laminates by using a carbon nanotube (CNT)/epoxy surface coating is presented. An initial parametric numerical study shows the effects of interphase properties on the macroscopic stressstrain behaviour of carbon nanotube/epoxy nanocomposites. Finite element (FE) simulations carried out for fully aligned single-walled CNTs (SWCNTs) and double-walled CNTs (DWCNTs) investigated the influence of properties of the polymer/CNT interphase and the interwall phase of DWCNTs. They reveal that a high shear stiffness of the CNT/polymer interphase is essential to take the full advantage of the load-bearing ability of the inner wall of the DWCNT, and thus enhance the mechanical performance of the nanocomposite. Furthermore the interphase shear stress distributions in interwall and CNT/polymer interphase of a DWCNT point out the relationship between CNT/epoxy interphase damage propagation and shear stress in the interwall phase.
    Original languageEnglish
    Title of host publicationPolymer Composite Materials
    Subtitle of host publicationFrom Macro, Micro to Nanoscale
    EditorsAbderrahim Boudenne
    PublisherTrans Tech Publications Limited
    Pages3-12
    ISBN (Print)9783037853832
    DOIs
    Publication statusPublished - 2012

    Publication series

    NameMaterials science forum
    Volume714

    Keywords

    • Carbon Nanotube
    • Epoxy
    • Carbon Fibre Composite
    • Impact resistance
    • Surface Coating
    • Computational Modelling

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