Evaluation of interfacial debonding process in single fibre composite using elasto-plastic shear-lag and FEM analyses

Souta Kimura, Jun Koyanagi, Takayuki Hama, Hiroyuki Kawada

    研究成果: Conference contribution

    抄録

    The interfacial fracture observed in fragmentation tests performed with a model of polymer-matrix composite is predicted using an elasto-plastic shear-lag analysis and shear strength criterion. Interfacial debonding propagation is significantly affected by plastic deformation in the vicinity of the interfacial debonding tip. Hence, the matrix is assumed to be an elasto-plastic material that deforms according to J2 flow theory. The theoretical prediction of the interfacial debonding process is compared with the experimental results, which leads the value of the interfacial shear strength. Our recent energy-balance scheme, including an energy dissipation induced by the plastic deformation around the debonding tip, is used to calculate an energy-release rate to propagate the interfacial debonding. To validate the theoretical values of interfacial properties, FEM analysis employing cohesive elements is conducted, in which the theoretically obtained interfacial properties are introduced as strength and fracture toughness of the cohesive elements. Numerical prediction of the interfacial debonding propagation was proved to be in good agreement with the experimental, which illustrates the validity of the theoretically obtained interfacial properties.

    元の言語English
    ホスト出版物のタイトルProgress of Composites 2008 in Asia and Australasia - Proceedings of the 6th Asian-Australasian Conference on Composite Materials, ACCM 2008
    ページ119-122
    ページ数4
    出版物ステータスPublished - 2008
    イベント6th Asian-Australasian Conference on Composite Materials: Progress of Composites 2008 in Asia and Australasia, ACCM 2008 - Kumamoto, Kyushu
    継続期間: 2008 9 232008 9 26

    Other

    Other6th Asian-Australasian Conference on Composite Materials: Progress of Composites 2008 in Asia and Australasia, ACCM 2008
    Kumamoto, Kyushu
    期間08/9/2308/9/26

    Fingerprint

    Debonding
    Plastics
    Finite element method
    Fibers
    Composite materials
    Shear strength
    Plastic deformation
    Polymer matrix composites
    Energy release rate
    Energy balance
    Fracture toughness
    Energy dissipation

    Keywords

      ASJC Scopus subject areas

      • Ceramics and Composites

      これを引用

      Kimura, S., Koyanagi, J., Hama, T., & Kawada, H. (2008). Evaluation of interfacial debonding process in single fibre composite using elasto-plastic shear-lag and FEM analyses. : Progress of Composites 2008 in Asia and Australasia - Proceedings of the 6th Asian-Australasian Conference on Composite Materials, ACCM 2008 (pp. 119-122)

      Evaluation of interfacial debonding process in single fibre composite using elasto-plastic shear-lag and FEM analyses. / Kimura, Souta; Koyanagi, Jun; Hama, Takayuki; Kawada, Hiroyuki.

      Progress of Composites 2008 in Asia and Australasia - Proceedings of the 6th Asian-Australasian Conference on Composite Materials, ACCM 2008. 2008. p. 119-122.

      研究成果: Conference contribution

      Kimura, S, Koyanagi, J, Hama, T & Kawada, H 2008, Evaluation of interfacial debonding process in single fibre composite using elasto-plastic shear-lag and FEM analyses. : Progress of Composites 2008 in Asia and Australasia - Proceedings of the 6th Asian-Australasian Conference on Composite Materials, ACCM 2008. pp. 119-122, 6th Asian-Australasian Conference on Composite Materials: Progress of Composites 2008 in Asia and Australasia, ACCM 2008, Kumamoto, Kyushu, 08/9/23.
      Kimura S, Koyanagi J, Hama T, Kawada H. Evaluation of interfacial debonding process in single fibre composite using elasto-plastic shear-lag and FEM analyses. : Progress of Composites 2008 in Asia and Australasia - Proceedings of the 6th Asian-Australasian Conference on Composite Materials, ACCM 2008. 2008. p. 119-122
      Kimura, Souta ; Koyanagi, Jun ; Hama, Takayuki ; Kawada, Hiroyuki. / Evaluation of interfacial debonding process in single fibre composite using elasto-plastic shear-lag and FEM analyses. Progress of Composites 2008 in Asia and Australasia - Proceedings of the 6th Asian-Australasian Conference on Composite Materials, ACCM 2008. 2008. pp. 119-122
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      abstract = "The interfacial fracture observed in fragmentation tests performed with a model of polymer-matrix composite is predicted using an elasto-plastic shear-lag analysis and shear strength criterion. Interfacial debonding propagation is significantly affected by plastic deformation in the vicinity of the interfacial debonding tip. Hence, the matrix is assumed to be an elasto-plastic material that deforms according to J2 flow theory. The theoretical prediction of the interfacial debonding process is compared with the experimental results, which leads the value of the interfacial shear strength. Our recent energy-balance scheme, including an energy dissipation induced by the plastic deformation around the debonding tip, is used to calculate an energy-release rate to propagate the interfacial debonding. To validate the theoretical values of interfacial properties, FEM analysis employing cohesive elements is conducted, in which the theoretically obtained interfacial properties are introduced as strength and fracture toughness of the cohesive elements. Numerical prediction of the interfacial debonding propagation was proved to be in good agreement with the experimental, which illustrates the validity of the theoretically obtained interfacial properties.",
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      AU - Hama, Takayuki

      AU - Kawada, Hiroyuki

      PY - 2008

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      N2 - The interfacial fracture observed in fragmentation tests performed with a model of polymer-matrix composite is predicted using an elasto-plastic shear-lag analysis and shear strength criterion. Interfacial debonding propagation is significantly affected by plastic deformation in the vicinity of the interfacial debonding tip. Hence, the matrix is assumed to be an elasto-plastic material that deforms according to J2 flow theory. The theoretical prediction of the interfacial debonding process is compared with the experimental results, which leads the value of the interfacial shear strength. Our recent energy-balance scheme, including an energy dissipation induced by the plastic deformation around the debonding tip, is used to calculate an energy-release rate to propagate the interfacial debonding. To validate the theoretical values of interfacial properties, FEM analysis employing cohesive elements is conducted, in which the theoretically obtained interfacial properties are introduced as strength and fracture toughness of the cohesive elements. Numerical prediction of the interfacial debonding propagation was proved to be in good agreement with the experimental, which illustrates the validity of the theoretically obtained interfacial properties.

      AB - The interfacial fracture observed in fragmentation tests performed with a model of polymer-matrix composite is predicted using an elasto-plastic shear-lag analysis and shear strength criterion. Interfacial debonding propagation is significantly affected by plastic deformation in the vicinity of the interfacial debonding tip. Hence, the matrix is assumed to be an elasto-plastic material that deforms according to J2 flow theory. The theoretical prediction of the interfacial debonding process is compared with the experimental results, which leads the value of the interfacial shear strength. Our recent energy-balance scheme, including an energy dissipation induced by the plastic deformation around the debonding tip, is used to calculate an energy-release rate to propagate the interfacial debonding. To validate the theoretical values of interfacial properties, FEM analysis employing cohesive elements is conducted, in which the theoretically obtained interfacial properties are introduced as strength and fracture toughness of the cohesive elements. Numerical prediction of the interfacial debonding propagation was proved to be in good agreement with the experimental, which illustrates the validity of the theoretically obtained interfacial properties.

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