Creep of fibre composite beams in bending

J. T. Evans; Wang Ningyun; H. W. Chandler

doi:10.1016/0956-7151(90)90124-Y

Creep of fibre composite beams in bending

J. T. Evans^*, Wang Ningyun, H. W. Chandler

^*Corresponding author for this work

Engineering

Newcastle University

Research output: Contribution to journal › Article › peer-review

6 Citations (Scopus)

Abstract

Large scale deformation of fibre reinforced composites (Mg alloy/Al₂O₃ fibres) has been observed after creep in bending at 310°C. The deformation is considered in terms of the continuum theory of fibre reinforced materials in which only elastic deformation occurs in the fibres but the matrix is allowed to deform in shear. It is shown that the continuum theory is capable of accounting for time-dependent microcracking or fracture when creep is allowed for. However, the continuum theory does not predict two stage creep or the shear cracking which was observed in the experiments. It is necessary to consider microstructural features in order to explain many aspects of the observations and some of these are considered. In particular, damage accumulates at the fibre-matrix interface and this is thought to lead to an increase in the creep rate after a critical deformation.

Original language	English
Pages (from-to)	1565-1572
Number of pages	8
Journal	Acta Metallurgica et Materialia
Volume	38
Issue number	8
DOIs	https://doi.org/10.1016/0956-7151(90)90124-Y
Publication status	Published - Aug 1990

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10.1016/0956-7151(90)90124-YLicence: Unspecified

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title = "Creep of fibre composite beams in bending",

abstract = "Large scale deformation of fibre reinforced composites (Mg alloy/Al2O3 fibres) has been observed after creep in bending at 310°C. The deformation is considered in terms of the continuum theory of fibre reinforced materials in which only elastic deformation occurs in the fibres but the matrix is allowed to deform in shear. It is shown that the continuum theory is capable of accounting for time-dependent microcracking or fracture when creep is allowed for. However, the continuum theory does not predict two stage creep or the shear cracking which was observed in the experiments. It is necessary to consider microstructural features in order to explain many aspects of the observations and some of these are considered. In particular, damage accumulates at the fibre-matrix interface and this is thought to lead to an increase in the creep rate after a critical deformation.",

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T1 - Creep of fibre composite beams in bending

AU - Evans, J. T.

AU - Ningyun, Wang

AU - Chandler, H. W.

PY - 1990/8

Y1 - 1990/8

N2 - Large scale deformation of fibre reinforced composites (Mg alloy/Al2O3 fibres) has been observed after creep in bending at 310°C. The deformation is considered in terms of the continuum theory of fibre reinforced materials in which only elastic deformation occurs in the fibres but the matrix is allowed to deform in shear. It is shown that the continuum theory is capable of accounting for time-dependent microcracking or fracture when creep is allowed for. However, the continuum theory does not predict two stage creep or the shear cracking which was observed in the experiments. It is necessary to consider microstructural features in order to explain many aspects of the observations and some of these are considered. In particular, damage accumulates at the fibre-matrix interface and this is thought to lead to an increase in the creep rate after a critical deformation.

AB - Large scale deformation of fibre reinforced composites (Mg alloy/Al2O3 fibres) has been observed after creep in bending at 310°C. The deformation is considered in terms of the continuum theory of fibre reinforced materials in which only elastic deformation occurs in the fibres but the matrix is allowed to deform in shear. It is shown that the continuum theory is capable of accounting for time-dependent microcracking or fracture when creep is allowed for. However, the continuum theory does not predict two stage creep or the shear cracking which was observed in the experiments. It is necessary to consider microstructural features in order to explain many aspects of the observations and some of these are considered. In particular, damage accumulates at the fibre-matrix interface and this is thought to lead to an increase in the creep rate after a critical deformation.

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SP - 1565

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JO - Acta Metallurgica et Materialia

JF - Acta Metallurgica et Materialia

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Creep of fibre composite beams in bending

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