Fracture and Fatigue in Graphene Nanocomposites

Authors

  • Mohammed A. Rafiee,

    1. Department of Mechanical, Aerospace, and Nuclear Engineering Rensselaer Polytechnic Institute, Troy, NY 12180 (USA)
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  • Javad Rafiee,

    1. Department of Mechanical, Aerospace, and Nuclear Engineering Rensselaer Polytechnic Institute, Troy, NY 12180 (USA)
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  • Iti Srivastava,

    1. Department of Mechanical, Aerospace, and Nuclear Engineering Rensselaer Polytechnic Institute, Troy, NY 12180 (USA)
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  • Zhou Wang,

    1. State Key Laboratory of Chemical Resource Engineering College of Materials Science and Engineering Beijing University of Chemical Technology Beijing 100029 (P.R. China)
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  • Huaihe Song,

    1. State Key Laboratory of Chemical Resource Engineering College of Materials Science and Engineering Beijing University of Chemical Technology Beijing 100029 (P.R. China)
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  • Zhong-Zhen Yu,

    1. State Key Laboratory of Chemical Resource Engineering College of Materials Science and Engineering Beijing University of Chemical Technology Beijing 100029 (P.R. China)
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  • Nikhil Koratkar

    Corresponding author
    1. Department of Mechanical, Aerospace, and Nuclear Engineering Rensselaer Polytechnic Institute, Troy, NY 12180 (USA)
    • Department of Mechanical, Aerospace, and Nuclear Engineering Rensselaer Polytechnic Institute, Troy, NY 12180 (USA)
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Abstract

original image

Graphene fillers are shown to be remarkably effective in suppressing crack propagation in epoxy polymers (see image). The graphene fillers show comparable increases in fracture toughness and fatigue crack propagation resistance to carbon nanotube, nanoparticle, and nanoclay additives at one to two orders of magnitude lower nanofiller weight fraction. This extraordinary property is related to deflection processes associated with the high-aspect-ratio sheet structure of graphene.

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