Interaction between transverse cracks and edge delamination considering free-edge effects in composite laminates

Atsushi Hosoi, Shinako Yagi, Keiichi Nagata, Hiroyuki Kawada

    Research output: Chapter in Book/Report/Conference proceedingConference contribution

    5 Citations (Scopus)

    Abstract

    The high-cycle fatigue characteristics, especially the initiation and propagation of edge delamination, were investigated with quasi-isotropic carbon fiber reinforced plastic (CFRP) laminates with a stacking sequence of [45/0/-45/90]S. To investigate the influence that transverse cracks have on the initiation and propagation of edge delamination, two types of specimens are used. One was a specimen where transverse cracks were arbitrarily introduced by static tensile loading before conducting the fatigue tests. The other was an undamaged specimen as new. As a result, it was found that the single transverse crack introduced before the fatigue test did not seriously affect the initiation of edge delamination. Moreover, the difference of the fatigue damage growth behavior depending on the applied stress level was observed. Under the test conditions of low-applied stress level and high-cyclic loadings, it was observed that the edge delamination grew before, or simultaneously with, the transverse crack propagation.

    Original languageEnglish
    Title of host publicationICCM International Conferences on Composite Materials
    Publication statusPublished - 2007
    Event16th International Conference on Composite Materials, ICCM-16 - "A Giant Step Towards Environmental Awareness: From Green Composites to Aerospace" - Kyoto
    Duration: 2007 Jul 82007 Jul 13

    Other

    Other16th International Conference on Composite Materials, ICCM-16 - "A Giant Step Towards Environmental Awareness: From Green Composites to Aerospace"
    CityKyoto
    Period07/7/807/7/13

    Keywords

    • Cfrp laminates
    • Composites
    • Delamination
    • Free-edge effects
    • High-cycle fatigue
    • Transverse crack

    ASJC Scopus subject areas

    • Engineering(all)
    • Ceramics and Composites

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