A comprehensive model for determining tensile strengths of various unidirectional composites

Jun Koyanagi, Hiroshi Hatta, Masaki Kotani, Hiroyuki Kawada

    Research output: Contribution to journalArticle

    34 Citations (Scopus)

    Abstract

    Simultaneous fiber-failure (SFF) model that determines tensile strengths for various systems of unidirectional composites comprehensively is presented. The SFF derives the strength of unidirectional composites as a function of the single-fiber strength distribution, interfacial shear strength, and matrix strength. The point of the SFF is that a fiber group which is considered to be experiencing simultaneous fiber failures triggered by neighboring fiber failures is assumed to fail when the weakest fiber in the fiber group fails. We discuss a method to determine the magnitude of the fiber group for various systems of composites on a basis of whether a crack located near a bi-materials interface penetrates into another material or deflects along the interface. The SFF is established by integrating the magnitude of the simultaneous fiber failures into the conventional Global load sharing model.

    Original languageEnglish
    Pages (from-to)1901-1914
    Number of pages14
    JournalJournal of Composite Materials
    Volume43
    Issue number18
    DOIs
    Publication statusPublished - 2009 Aug

    Fingerprint

    Tensile strength
    Fibers
    Composite materials
    Shear strength
    Cracks

    Keywords

    • Carbon-carbon composite
    • Ceramic matrix composite
    • Polymer matrix composite
    • Tensile strength
    • Unidirectional composite

    ASJC Scopus subject areas

    • Ceramics and Composites
    • Materials Chemistry
    • Mechanical Engineering
    • Mechanics of Materials

    Cite this

    A comprehensive model for determining tensile strengths of various unidirectional composites. / Koyanagi, Jun; Hatta, Hiroshi; Kotani, Masaki; Kawada, Hiroyuki.

    In: Journal of Composite Materials, Vol. 43, No. 18, 08.2009, p. 1901-1914.

    Research output: Contribution to journalArticle

    Koyanagi, Jun ; Hatta, Hiroshi ; Kotani, Masaki ; Kawada, Hiroyuki. / A comprehensive model for determining tensile strengths of various unidirectional composites. In: Journal of Composite Materials. 2009 ; Vol. 43, No. 18. pp. 1901-1914.
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