Effect of stress ratio on fatigue characteristics in the out-of-plane direction of thick CFRP laminates with toughened interlaminar layers

Atsushi Hosoi, Shigeyoshi Sakuma, Sen Seki, Yuzo Fujita, Ichiro Taketa, Hiroyuki Kawada

    Research output: Contribution to conferencePaperpeer-review

    2 Citations (Scopus)

    Abstract

    The effect of the stress ratio on fatigue characteristics in the out-of-plane direction of thick carbon fiber reinforced plastic (CFRP) laminates with toughened interlaminar layers was evaluated. The spool shaped specimens cut out the unidirectional thick CFRP laminates, which pile up 88 plies of the prepreg with toughened interlaminar layer, T800S/3900-2B, were used. The fatigue tests were conducted under the stress ratios of R = 0.1 and -1 to evaluate the effect of the stress ratio. As the results of the fatigue tests, the fatigue life of the specimens at R = -1 was shorter than that at R = 0.1. It was found that the fatigue properties of the CFRP laminates in the out-of-plane direction are affected by the stress amplitude from the experimental results. In addition, the fatigue life under the different stress ratio can be evaluated equivalently using the Walker model which can consider the mean stress effect.

    Original languageEnglish
    Publication statusPublished - 2015 Jan 1
    Event20th International Conference on Composite Materials, ICCM 2015 - Copenhagen, Denmark
    Duration: 2015 Jul 192015 Jul 24

    Other

    Other20th International Conference on Composite Materials, ICCM 2015
    CountryDenmark
    CityCopenhagen
    Period15/7/1915/7/24

    Keywords

    • Fatigue
    • Out-of-plane
    • Stress ratio
    • Thick CFRP laminates
    • Toughened interlaminar layers

    ASJC Scopus subject areas

    • Engineering(all)
    • Ceramics and Composites

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