Time-dependent reduction of tensile strength caused by interfacial degradation under constant strain duration in UD-CFRP

Jun Koyanagi*, Hiroshi Hatta, Fumio Ogawa, Hiroyuki Kawada

*この研究の対応する著者

研究成果: Article査読

21 被引用数 (Scopus)

抄録

The residual strength in UD-CFRP was measured after being subjected to constant strain. In order to quantify the strength reduction, the time-dependent variation of interfacial stress-transfer capacity in a single-fiber composite specimen was quantitatively studied using micro-Raman spectroscopy. The analysis originally included a decrease of interfacial frictional stress due to a relaxation of interfacial radial stress and a time-dependency of an interfacial debonding propagation criterion, based on the conventional viscoelastic shear-lag model. The residual strength in UD-CFRP after enduring long-term loading was then analyzed using the global load sharing model with the results of variation of the interfacial property.

本文言語English
ページ(範囲)3007-3026
ページ数20
ジャーナルJournal of Composite Materials
41
25
DOI
出版ステータスPublished - 2007 12

ASJC Scopus subject areas

  • セラミックおよび複合材料
  • 材料力学
  • 機械工学
  • 材料化学

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