Mechanical properties of fiber/matrix interface in polymer matrix composites

Jun Koyanagi, Shinji Ogihara, Hayato Nakatani, Tomonaga Okabe, Satoru Yoneyama

Research output: Contribution to journalArticlepeer-review

26 Citations (Scopus)


This paper reviews the mechanical properties of interface adhesion between the fiber and matrix mainly by interpreting the authors' past articles. First, the methods for evaluating interface mechanical properties are described considering micromechanical testing using single-fiber composite specimens. In particular, the test-type dependence of the obtained interfacial strength is discussed, and this paper suggests that the cruciform specimen technique is an appropriate testing method. Then, this paper presents another way to obtain interface properties that is extracted from a bulk composite test. Moreover, the time and temperature dependence of the interface strength and the interface failure envelope under a combined stress state are described, respectively. Interface toughness is also discussed at the end of this paper, and it is implied that the value might be much lower than those presented in many conventional articles.

Original languageEnglish
Pages (from-to)551-570
Number of pages20
JournalAdvanced Composite Materials
Publication statusPublished - 2014 Oct 1


  • interface mechanical properties
  • polymer matrix composites
  • temperature dependence
  • time dependence

ASJC Scopus subject areas

  • Ceramics and Composites
  • Mechanics of Materials
  • Mechanical Engineering


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