Characterization of fiber fragmentation in a single-fiber composite in relation to matrix failure and interfacial debonding

M. Nishikawa, T. Okabe, N. Takeda

Research output: Chapter in Book/Report/Conference proceedingConference contribution

1 Citation (Scopus)

Abstract

This paper examines the single-fiber composite (SFC) test as a micromechanical method to evaluate the interfacial properties and fiber fracture mechanisms in fiber-reinforced composites. A micromechanical model is developed based on finite element analysis combined with cohesive element method to characterize the fiber fragmentation in relation to the matrix failure and interfacial debonding around a fiber break, as typical micro-scale damage observed in the SFC specimen. The analysis clarifies the damage evolution mechanism after the fiber fragmentation in carbon-fiber/epoxy composite system. Interfacial debonding influences significantly on the axial stress recovery from the fiber breaking point, which is a key factor for the subsequent fiber fragmentation. Moreover, it is found that the debonding growth is greatly affected by the matrix inelastic deformation or matrix crack. The simulated results are also discussed by comparison with other theoretical models or some experimental observations.

Original languageEnglish
Title of host publicationProceedings of the 12th U.S.-Japan Conference on Composite Materials
Pages774-792
Number of pages19
Publication statusPublished - 2006
Event12th U.S.-Japan Conference on Composite Materials - Dearborn, MI, United States
Duration: 2006 Sep 212006 Sep 22

Publication series

NameProceedings of the 12th U.S.-Japan Conference on Composite Materials

Other

Other12th U.S.-Japan Conference on Composite Materials
CountryUnited States
CityDearborn, MI
Period06/9/2106/9/22

ASJC Scopus subject areas

  • Ceramics and Composites

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