Creep Strength of Discontinuous Fibre Composites

Ole Bøcker Pedersen

    Research output: Contribution to journalJournal articleResearchpeer-review

    Abstract

    A unidirectional, discontinuous fibre composite is considered under conditions of steady state creep in the direction of reinforcement. The composite consists of noncreeping, discontinuous, perfectly aligned, uniformly distributed fibres which are perfectly bonded to a matrix obeying a power relation between stress and strain rate. Expressions for the interface stress, the creep velocity profile adjacent to the fibres and the creep strength of the composite are derived. Previous results for the creep strength, sc = aVfs0 ( \frac[( Î )\dot] [( Î )\dot] 0 )1/nr1 + 1/n c=Vf001n1+1n in which[( Î )\dot] is the composite creep rate,V f is the fibre volume fraction,sgr 0,epsi 0 andn are the constants in the matrix creep law. The creep strength coefficient agr is found to be very weakly dependent onV f and practically independent ofn whenn is greater than about 6.
    Original languageEnglish
    JournalJournal of Materials Science
    Volume9
    Issue number6
    Pages (from-to)948-952
    ISSN0022-2461
    DOIs
    Publication statusPublished - 1974

    Cite this

    Pedersen, Ole Bøcker. / Creep Strength of Discontinuous Fibre Composites. In: Journal of Materials Science. 1974 ; Vol. 9, No. 6. pp. 948-952.
    @article{ffcd466f58e74677ac1abb6fdfe3f470,
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    abstract = "A unidirectional, discontinuous fibre composite is considered under conditions of steady state creep in the direction of reinforcement. The composite consists of noncreeping, discontinuous, perfectly aligned, uniformly distributed fibres which are perfectly bonded to a matrix obeying a power relation between stress and strain rate. Expressions for the interface stress, the creep velocity profile adjacent to the fibres and the creep strength of the composite are derived. Previous results for the creep strength, sc = aVfs0 ( \frac[( {\^I} )\dot] [( {\^I} )\dot] 0 )1/nr1 + 1/n c=Vf001n1+1n in which[( {\^I} )\dot] is the composite creep rate,V f is the fibre volume fraction,sgr 0,epsi 0 andn are the constants in the matrix creep law. The creep strength coefficient agr is found to be very weakly dependent onV f and practically independent ofn whenn is greater than about 6.",
    author = "Pedersen, {Ole B{\o}cker}",
    year = "1974",
    doi = "10.1007/BF00570388",
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    Creep Strength of Discontinuous Fibre Composites. / Pedersen, Ole Bøcker.

    In: Journal of Materials Science, Vol. 9, No. 6, 1974, p. 948-952.

    Research output: Contribution to journalJournal articleResearchpeer-review

    TY - JOUR

    T1 - Creep Strength of Discontinuous Fibre Composites

    AU - Pedersen, Ole Bøcker

    PY - 1974

    Y1 - 1974

    N2 - A unidirectional, discontinuous fibre composite is considered under conditions of steady state creep in the direction of reinforcement. The composite consists of noncreeping, discontinuous, perfectly aligned, uniformly distributed fibres which are perfectly bonded to a matrix obeying a power relation between stress and strain rate. Expressions for the interface stress, the creep velocity profile adjacent to the fibres and the creep strength of the composite are derived. Previous results for the creep strength, sc = aVfs0 ( \frac[( Î )\dot] [( Î )\dot] 0 )1/nr1 + 1/n c=Vf001n1+1n in which[( Î )\dot] is the composite creep rate,V f is the fibre volume fraction,sgr 0,epsi 0 andn are the constants in the matrix creep law. The creep strength coefficient agr is found to be very weakly dependent onV f and practically independent ofn whenn is greater than about 6.

    AB - A unidirectional, discontinuous fibre composite is considered under conditions of steady state creep in the direction of reinforcement. The composite consists of noncreeping, discontinuous, perfectly aligned, uniformly distributed fibres which are perfectly bonded to a matrix obeying a power relation between stress and strain rate. Expressions for the interface stress, the creep velocity profile adjacent to the fibres and the creep strength of the composite are derived. Previous results for the creep strength, sc = aVfs0 ( \frac[( Î )\dot] [( Î )\dot] 0 )1/nr1 + 1/n c=Vf001n1+1n in which[( Î )\dot] is the composite creep rate,V f is the fibre volume fraction,sgr 0,epsi 0 andn are the constants in the matrix creep law. The creep strength coefficient agr is found to be very weakly dependent onV f and practically independent ofn whenn is greater than about 6.

    U2 - 10.1007/BF00570388

    DO - 10.1007/BF00570388

    M3 - Journal article

    VL - 9

    SP - 948

    EP - 952

    JO - Journal of Materials Science

    JF - Journal of Materials Science

    SN - 0022-2461

    IS - 6

    ER -