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

*この研究の対応する著者

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.

本文言語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
出版ステータスPublished - 2008 12 1
イベント6th Asian-Australasian Conference on Composite Materials: Progress of Composites 2008 in Asia and Australasia, ACCM 2008 - Kumamoto, Kyushu, Japan
継続期間: 2008 9 232008 9 26

出版物シリーズ

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

Conference

Conference6th Asian-Australasian Conference on Composite Materials: Progress of Composites 2008 in Asia and Australasia, ACCM 2008
国/地域Japan
CityKumamoto, Kyushu
Period08/9/2308/9/26

ASJC Scopus subject areas

  • セラミックおよび複合材料

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