Evaluation of initiation of the interfacial debonding in single fiber composite (Energy balance method considering an energy dissipation of the plastic deformation)

Souta Kimura, Jun Koyanagi, Hiroyuki Kawada

研究成果: Article

13 引用 (Scopus)

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Fiber-matrix interfacial adhesion in composites is traditionally evaluated by means of a stress-based parameter. Recently, an interfacial energy parameter is suggested to be a valid alternative. However, the energy-based approaches overestimated the energy release rate to initiate the interfacial debonding (interfacial energy), since the plastic deformation in the vicinity of the debonding was neglected for simplicity. An effect of the plastic deformation on the interfacial energy of a fiber-reinforced polymer matrix composite is studied to evaluate the initiation of the interfacial debonding. The fragmentation tests with a model of glass fiber-reinforced vinylester matrix composite were performed, and the interfacial energy with the energy balance method taking into account an energy dissipation of the plastic deformation was calculated. The following results are confirmed; the plastic deformation has a significant influence on the interfacial energy, and the energy balance scheme taking into account the plastic energy dissipation leads to the constant interfacial energy without reference to the amount of the released potential energy. The differences between our model and the previous one are discussed.

元の言語English
ページ(範囲)451-457
ページ数7
ジャーナルJSME International Journal, Series A: Solid Mechanics and Material Engineering
49
発行部数3
DOI
出版物ステータスPublished - 2006 12 1

ASJC Scopus subject areas

  • Materials Science(all)
  • Mechanical Engineering

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