Matrix cracking and the mechanical behaviour of SiC─CAS composites

Harris, B.; Habib, Faisal; Cooke, R.G.

doi:10.1098/rspa.1992.0050

Cited by 48 publications

(3 citation statements)

References 15 publications

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“…It shows that the stresses do depend on the ply orientations. In fact, for CFCC, the stresses of transverse cracks in the 90 ± plies are much smaller than those of matrix cracking in the 0 ± plies [19], and the strength of the laminate composites should decrease with the increase of the thickness of 90 ± plies. The typical stress-strain curves in 0 ± ply show that the CFCC is damage sensitive, and the curved domain of deformation results essentially from transverse cracking in the matrix.…”

Section: Meso-microscopic Stress-strain Behaviormentioning

confidence: 99%

Finite element analysis of macro-microscopic mechanical behavior of cross-ply fiber-reinforced ceramic matrix composites with matrix anisotropic damage

Luo¹,

Takezono²,

Tao³

et al. 2003

adv compos mater

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In this paper, a macro-microscopic constitutive model has been developed for the prediction of the mechanical behavior of the cross-ply continuous ber reinforced ceramic matrix composites (CFCC) with anisotropic damage in matrix phase. The asymptotic expansion homogenization method is used to obtain the effective mechanical properties, and to derive homogenized elastic concentration factors and the gross stiffness matrix of the cross-ply laminate composites. Internal variables are introduced to describe the evolution of the damage state under uniaxial loading. The SiC/CAS composites with different stacking sequences are analyzed to understand the effect of thickness of 90 ± plies on the mechanical behavior and damage characteristics. The methodology has been incorporated into a nite element program, and numerical results compare well with existing experimental data.

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Section: Meso-microscopic Stress-strain Behaviormentioning

confidence: 99%

Finite element analysis of macro-microscopic mechanical behavior of cross-ply fiber-reinforced ceramic matrix composites with matrix anisotropic damage

Luo¹,

Takezono²,

Tao³

et al. 2003

adv compos mater

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“…Both materials have been studied experimentally by Sheikh et al (2009). The former material is a cross-ply laminate consisting of calcium aluminosilicate (CAS) glass ceramic matrix reinforced with SiC (Nicalon) fibres (Harris et al, 1992). The layout is (0°/90°) 5 , where the subscript, 5 signifies 5 groups of 0°/90°plies, equivalent to 10 laminae, with loose plain woven fabric skins.…”

Section: Introductionmentioning

confidence: 99%

Influence of applied in-plane strain on transverse thermal conductivity of 0°/90° and plain weave ceramic matrix composites

Zhang

Hayhurst

2011

International Journal of Solids and Structures

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a b s t r a c tA computationally economic finite-element-based stress analysis model, developed previously by the authors, has been extended to predict the thermal behaviour of ceramic matrix composites with strain-induced damage. The finite element analysis utilises a solid element to represent a homogenised orthotropic medium of a heterogeneous uni-directional tow. The non-linear multi-axial strain dependent thermal behaviour has been discretised by multi-linear curves, which have been implemented by a user defined subroutine, USDFLD, in the commercial finite element package, ABAQUS. The model has been used to study the performance of two CMC composites: a SiC (Nicalon) fibre-calcium aluminosilicate (CAS) matrix, 0°/90°cross-ply laminate Nicalon-CAS; and, carbon fibre-dual carbon-SiC matrix (C/CSiC), plain weave laminate DLR-XT. The global through-thickness thermal conductivity degradation with composite uni-axial strain has been predicted. Comparisons have been made between the predictions and experimental data for both materials, and good agreement has been achieved. For the Nicalon-CAS 0°/90°cross-ply the dominant mechanism of thermal conductivity degradation is combined fibre failure and associated wake debonding; and, for the DLR-XT plain weave the same mechanisms act in combination with out-of-plane shear failure.

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“…Both materials have been studied experimentally by Sheikh et al (2009). The former material is a cross-ply laminate consisting of calcium aluminosilicate (CAS) glass ceramic reinforced with SiC (Nicalon) fibres (Harris et al, 1992). The layout is (0°/90°) 5 , where the subscript, 5 signifies 5 groups of 0°/90°plies, with loose plain woven fabric skins.…”

Section: Introductionmentioning

confidence: 99%

Stress–strain and fracture behaviour of 0°/90° and plain weave ceramic matrix composites from tow multi-axial properties

Zhang

Hayhurst

2010

International Journal of Solids and Structures

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a b s t r a c tA computationally economic finite-element-based multi-linear elastic orthotropic materials approach has been developed to predict the stress-strain and fracture behaviour of ceramic matrix composites with strain-induced damage. The finite element analysis utilises a solid element to represent a homogenised orthotropic medium of a heterogeneous uni-directional tow. The non-linear multi-axial stressstrain behaviour has been discretised to multi-linear elastic curves, which have been implemented by a user defined subroutine or UMAT in the commercial finite element package, ABAQUS. The model has been used to study the performance of two CMC composites: a SiC (Nicalon) fibre/calcium aluminosilicate (CAS) matrix 0°/90°cross-ply laminate Nicalon/CAS; and, a carbon fibre/carbon matrix-SiC matrix (C/C-SiC) plain weave laminate DLR-XT. The global stress-strain curves with catastrophic fracture behaviour and effects of fibre waviness have been predicted. Comparisons have been made between the predictions and experimental data for both materials. The predicted results when fibre waviness is taken into account compare well with the experimental data.

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Matrix cracking and the mechanical behaviour of SiC─CAS composites

Cited by 48 publications

References 15 publications

Finite element analysis of macro-microscopic mechanical behavior of cross-ply fiber-reinforced ceramic matrix composites with matrix anisotropic damage

Finite element analysis of macro-microscopic mechanical behavior of cross-ply fiber-reinforced ceramic matrix composites with matrix anisotropic damage

Influence of applied in-plane strain on transverse thermal conductivity of 0°/90° and plain weave ceramic matrix composites

Stress–strain and fracture behaviour of 0°/90° and plain weave ceramic matrix composites from tow multi-axial properties

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