High-cycle fatigue characteristics of quasi-isotropic CFRP laminates over 108 cycles (Initiation and propagation of delamination considering interaction with transverse cracks)

Atsushi Hosoi, Narumichi Sato, Yasuyuki Kusumoto, Keita Fujiwara, Hiroyuki Kawada

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    High-cycle fatigue features of over 108 cycles, particularly the initiation and propagation of edge delamination considering the effects of transverse cracks, were investigated using quasi-isotropic carbon-fiber-reinforced plastic (CFRP) laminates with a stacking sequence of [45/0/-45/90]s in this study. In the relationship between a transverse crack density and initiation and growth of edge delamination, it was found that fatigue damage growth behavior varied depending on applied stress. It was observed that edge delamination initiated and grew at parts where transverse cracks were dense at ordinary applied stress, whereas it was observed that edge delamination grew before or simultaneously with transverse crack propagation at a low applied stress and high-cycle loading. In addition, the critical transverse crack density where delamination begins growing was calculated to evaluate the interaction between transverse crack and edge delamination growth.

    Original languageEnglish
    Pages (from-to)29-36
    Number of pages8
    JournalInternational Journal of Fatigue
    Issue number1
    Publication statusPublished - 2010 Jan



    • Composites
    • Delamination
    • Energy release rate
    • High-cycle fatigue
    • Transverse crack

    ASJC Scopus subject areas

    • Industrial and Manufacturing Engineering
    • Mechanical Engineering
    • Mechanics of Materials
    • Materials Science(all)
    • Modelling and Simulation

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