Delayed fracture of woven GFRP laminates in hostile environment

M. Kotani, M. Yajima, Hiroyuki Kawada

    研究成果: Conference contribution

    抄録

    The objective of this paper is to clarify mechanical properties and delayed fracture mechanism of woven GFRP laminates which possess high corrosion resistance in hostile environment. GFRP used in this paper is consisted of acid resistant glass fiber and vinylester resin and the environment discussed are deionized water, hydrochloric acid (1.0 mol/l) and air at 80°C. Mechanical properties of GFRP decreased slightly with immersion into two solutions and decreased intensely after long-term immersion. The mechanical properties decreased regardless of the solutions and showed a tendency to saturate toward certain values. Strain and its growth rate of GFRP under constant tensile load increased with the increase of applied stress and with immersion into both solutions. Besides, delayed fracture occurred in both solutions and fracture time shortened drastically with the increase of applied stress and temperature and also decreased in the order in air, in deionized water and in hydrochloric acid. In addition, fracture surfaces of GFRP after delayed fracture were observed. It was concluded that the strength degradation of glass fiber aligned toward the loading direction lead to fiber break and result in delayed fracture of woven GFRP.

    元の言語English
    ホスト出版物のタイトルECCM 2012 - Composites at Venice, Proceedings of the 15th European Conference on Composite Materials
    出版者European Conference on Composite Materials, ECCM
    ISBN(印刷物)9788888785332
    出版物ステータスPublished - 2012
    イベント15th European Conference on Composite Materials: Composites at Venice, ECCM 2012 - Venice
    継続期間: 2012 6 242012 6 28

    Other

    Other15th European Conference on Composite Materials: Composites at Venice, ECCM 2012
    Venice
    期間12/6/2412/6/28

    Fingerprint

    Laminates
    Hydrochloric Acid
    Deionized water
    Hydrochloric acid
    Glass fibers
    Mechanical properties
    Air
    Corrosion resistance
    Loads (forces)
    Resins
    Degradation
    Acids
    Fibers
    Temperature
    fiberglass

    Keywords

      ASJC Scopus subject areas

      • Ceramics and Composites

      これを引用

      Kotani, M., Yajima, M., & Kawada, H. (2012). Delayed fracture of woven GFRP laminates in hostile environment. : ECCM 2012 - Composites at Venice, Proceedings of the 15th European Conference on Composite Materials European Conference on Composite Materials, ECCM.

      Delayed fracture of woven GFRP laminates in hostile environment. / Kotani, M.; Yajima, M.; Kawada, Hiroyuki.

      ECCM 2012 - Composites at Venice, Proceedings of the 15th European Conference on Composite Materials. European Conference on Composite Materials, ECCM, 2012.

      研究成果: Conference contribution

      Kotani, M, Yajima, M & Kawada, H 2012, Delayed fracture of woven GFRP laminates in hostile environment. : ECCM 2012 - Composites at Venice, Proceedings of the 15th European Conference on Composite Materials. European Conference on Composite Materials, ECCM, 15th European Conference on Composite Materials: Composites at Venice, ECCM 2012, Venice, 12/6/24.
      Kotani M, Yajima M, Kawada H. Delayed fracture of woven GFRP laminates in hostile environment. : ECCM 2012 - Composites at Venice, Proceedings of the 15th European Conference on Composite Materials. European Conference on Composite Materials, ECCM. 2012
      Kotani, M. ; Yajima, M. ; Kawada, Hiroyuki. / Delayed fracture of woven GFRP laminates in hostile environment. ECCM 2012 - Composites at Venice, Proceedings of the 15th European Conference on Composite Materials. European Conference on Composite Materials, ECCM, 2012.
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      AU - Kotani, M.

      AU - Yajima, M.

      AU - Kawada, Hiroyuki

      PY - 2012

      Y1 - 2012

      N2 - The objective of this paper is to clarify mechanical properties and delayed fracture mechanism of woven GFRP laminates which possess high corrosion resistance in hostile environment. GFRP used in this paper is consisted of acid resistant glass fiber and vinylester resin and the environment discussed are deionized water, hydrochloric acid (1.0 mol/l) and air at 80°C. Mechanical properties of GFRP decreased slightly with immersion into two solutions and decreased intensely after long-term immersion. The mechanical properties decreased regardless of the solutions and showed a tendency to saturate toward certain values. Strain and its growth rate of GFRP under constant tensile load increased with the increase of applied stress and with immersion into both solutions. Besides, delayed fracture occurred in both solutions and fracture time shortened drastically with the increase of applied stress and temperature and also decreased in the order in air, in deionized water and in hydrochloric acid. In addition, fracture surfaces of GFRP after delayed fracture were observed. It was concluded that the strength degradation of glass fiber aligned toward the loading direction lead to fiber break and result in delayed fracture of woven GFRP.

      AB - The objective of this paper is to clarify mechanical properties and delayed fracture mechanism of woven GFRP laminates which possess high corrosion resistance in hostile environment. GFRP used in this paper is consisted of acid resistant glass fiber and vinylester resin and the environment discussed are deionized water, hydrochloric acid (1.0 mol/l) and air at 80°C. Mechanical properties of GFRP decreased slightly with immersion into two solutions and decreased intensely after long-term immersion. The mechanical properties decreased regardless of the solutions and showed a tendency to saturate toward certain values. Strain and its growth rate of GFRP under constant tensile load increased with the increase of applied stress and with immersion into both solutions. Besides, delayed fracture occurred in both solutions and fracture time shortened drastically with the increase of applied stress and temperature and also decreased in the order in air, in deionized water and in hydrochloric acid. In addition, fracture surfaces of GFRP after delayed fracture were observed. It was concluded that the strength degradation of glass fiber aligned toward the loading direction lead to fiber break and result in delayed fracture of woven GFRP.

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      KW - Deionized water

      KW - Delayed fracture

      KW - Hydrochloric acid

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