Interlaminar mode-II fracture toughness of a glass-fiber epoxy laminate

Heikki Keinänen, Tero Uuttu, Mikko Lehtonen

    Research output: Book/ReportReport


    In this work fracture mechanics and experimental mechanics approaches were used to characterize mode-II interlaminar fracture of a glass-fibre reinforced epoxy (GRFP) laminate. Mode-II interlaminar fracture toughness was characterized by using the end-notched flexure (ENF) test. The ENF-specimen was modelled by using both analytical (beam theory) and numerical (finite-element method) approaches. Calculated results were compared to experimental ones and the interlaminar mode-II fracture toughness of the particular laminate was determined. In the particular case the ENF-test is suitable for characterization the interlaminar fracture toughness.
    Original languageEnglish
    Place of PublicationEspoo
    PublisherVTT Technical Research Centre of Finland
    Number of pages33
    ISBN (Print)951-38-4223-1
    Publication statusPublished - 1992
    MoE publication typeNot Eligible

    Publication series

    SeriesVTT Publications


    • epoxy laminates
    • fiberglass reinforced plastics
    • fracture mechanics
    • fracture strength
    • toughness
    • fracture tests
    • notch tests
    • bend tests
    • mathematical models
    • analysis (mathematics)
    • finite element analysis
    • calculations


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