Evaluation of stress concentration caused by fibre failure using multi-fibre composites: Stress concentration factors and interfacial property

Souta Kimura, Teppei Kubota, Hiroyuki Kawada

    研究成果: Conference contribution

    抄録

    Stress concentration caused by a fibre failure is assessed by testing a multi-fibre model composite. The specimen consists of ECR-glass and Kevlar fibers embedded in a vinylester matrix, and the fibers are embedded parallel to each other at a constant distance. The vinylester/glass-fibre interfacial property is varied to investigate relationship between the interfacial property and stress concentration factor (SCF). Micro Raman spectroscopy (MRS) is used to directly capture the stress concentration profiles in the intact Kevlar fibre induced by a fibre break of ECR-glass fibre. From experimental results, the stress distribution of the Kevlar fibre is found to have its maximum values at two points which are adjacent to the fibre-break point and the interfacial debonding tip, respectively. An elasto-plastic shear-lag analysis is employed to predict the values of SCF, and the theoretical values of SCF are proved to be in good agreement with the experimental results. The values of SCF are found to be strongly affected by the interfacial property, and the optimal value of the interfacial strength is discussed.

    元の言語English
    ホスト出版物のタイトルAdvanced Composites for Efficiency and Environment - The US-Japan Conference on Composite Materials 2008, US-Japan 2008
    出版物ステータスPublished - 2008
    イベントUS-Japan Conference on Composite Materials 2008, US-Japan 2008 - Tokyo
    継続期間: 2008 6 62008 6 7

    Other

    OtherUS-Japan Conference on Composite Materials 2008, US-Japan 2008
    Tokyo
    期間08/6/608/6/7

    Fingerprint

    Stress concentration
    Fibers
    Composite materials
    Glass fibers
    Debonding
    Raman spectroscopy
    Plastics
    Glass
    Testing

    Keywords

      ASJC Scopus subject areas

      • Ceramics and Composites

      これを引用

      Kimura, S., Kubota, T., & Kawada, H. (2008). Evaluation of stress concentration caused by fibre failure using multi-fibre composites: Stress concentration factors and interfacial property. : Advanced Composites for Efficiency and Environment - The US-Japan Conference on Composite Materials 2008, US-Japan 2008

      Evaluation of stress concentration caused by fibre failure using multi-fibre composites : Stress concentration factors and interfacial property. / Kimura, Souta; Kubota, Teppei; Kawada, Hiroyuki.

      Advanced Composites for Efficiency and Environment - The US-Japan Conference on Composite Materials 2008, US-Japan 2008. 2008.

      研究成果: Conference contribution

      Kimura, S, Kubota, T & Kawada, H 2008, Evaluation of stress concentration caused by fibre failure using multi-fibre composites: Stress concentration factors and interfacial property. : Advanced Composites for Efficiency and Environment - The US-Japan Conference on Composite Materials 2008, US-Japan 2008. US-Japan Conference on Composite Materials 2008, US-Japan 2008, Tokyo, 08/6/6.
      Kimura S, Kubota T, Kawada H. Evaluation of stress concentration caused by fibre failure using multi-fibre composites: Stress concentration factors and interfacial property. : Advanced Composites for Efficiency and Environment - The US-Japan Conference on Composite Materials 2008, US-Japan 2008. 2008
      Kimura, Souta ; Kubota, Teppei ; Kawada, Hiroyuki. / Evaluation of stress concentration caused by fibre failure using multi-fibre composites : Stress concentration factors and interfacial property. Advanced Composites for Efficiency and Environment - The US-Japan Conference on Composite Materials 2008, US-Japan 2008. 2008.
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