Effect of defects on fracture strength of graphene sheets

M. C. Wang, C. Yan, L. Ma, N. Hu, M. W. Chen

    Research output: Contribution to journalArticlepeer-review

    162 Citations (Scopus)

    Abstract

    With a hexagonal monolayer network of carbon atoms, graphene has demonstrated exceptional electrical and mechanical properties. In this work, the fracture of graphene sheets with Stone-Wales type defects and vacancies were investigated using molecular dynamics simulations at different temperatures. The initiation of defects via bond rotation was also investigated. The results indicate that the defects and vacancies can cause significant strength loss in graphene. The fracture strength of graphene is also affected by temperature and loading directions. The simulation results were compared with the prediction from the quantized fracture mechanics.

    Original languageEnglish
    Pages (from-to)236-239
    Number of pages4
    JournalComputational Materials Science
    Volume54
    Issue number1
    DOIs
    Publication statusPublished - 2012 Mar

    Keywords

    • Defect
    • Fracture strength
    • Graphene
    • Molecular dynamics simulation

    ASJC Scopus subject areas

    • Computer Science(all)
    • Chemistry(all)
    • Materials Science(all)
    • Mechanics of Materials
    • Physics and Astronomy(all)
    • Computational Mathematics

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