Modelling the geometry of textile reinforcements for composites: TexGen

Long, A.C.; Brown, Louise P.

doi:10.1533/9780857093714.2.239

Cited by 78 publications

(65 citation statements)

References 3 publications

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“…continuity and differentiability) of the realistic yarn paths. This problem was resolved by the automatic refinement procedure within TexGen 25 which fits a cubic spline through nodal points of a yarn and then adjusts yarn cross-sections to avoid interpenetrations. Numerical simulations based on the stochastic models showed that the effect of the yarn path variation on the Young's modulus is not significant.…”

Section: Discussionmentioning

confidence: 99%

“…This makes it possible to create a single-layer unit cell model of the woven composite in TexGen software 25 by using averaged results of the studies. This model can also be used to create multi-layer models of laminates with layer shifts corresponding to those measured with m-CT.…”

Section: Idealised and Stochastic Geometry Modelsmentioning

confidence: 99%

“…Small interpenetrations of yarns which can occur due to the variations of yarn paths were automatically corrected by applying a correction procedure which adjusts yarns dimensions and cross-section orientations as described by Long and Brown. 25 It should be noted that this procedure does not change the position of the centre of the yarn within TexGen and hence preserves local fibre orientation.…”

Section: Idealised and Stochastic Geometry Modelsmentioning

confidence: 99%

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Effects of layer shift and yarn path variability on mechanical properties of a twill weave composite

Matveev

Long

Brown

et al. 2016

Journal of Composite Materials

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ArticleEffects of layer shift and yarn path variability on mechanical properties of a twill weave composite MY Matveev, AC Long, LP Brown and IA Jones Abstract Experimental and numerical analyses of a woven composite were performed in order to assess the effect of yarn path and layer shift variability on properties of the composite. Analysis of the geometry of a 12 K carbon fibre 2 Â 2 twill weave at the meso-and macro-scales showed the prevalence of the yarn path variations at the macro-scale over the meso-scale variations. Numerical analysis of yarn path variability showed that it is responsible for a Young's modulus reduction of 0.5% and CoV of 1% which makes this type of variability in the selected reinforcement almost insignificant for an elastic analysis. Finite element analysis of damage propagation in laminates with layer shift showed good agreement with the experiments. Both numerical analysis and experiments showed that layer shift has a strong effect on the shape of the stress-strain curve. In particular, laminates with no layer shift tend to exhibit a kink in the stress-strain curve which was attributed solely to the layer configuration.

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Section: Discussionmentioning

confidence: 99%

Section: Idealised and Stochastic Geometry Modelsmentioning

confidence: 99%

Section: Idealised and Stochastic Geometry Modelsmentioning

confidence: 99%

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Effects of layer shift and yarn path variability on mechanical properties of a twill weave composite

Matveev

Long

Brown

et al. 2016

Journal of Composite Materials

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“…Using the Python scripting interface of TexGen [28], it is possible to extract information of individual filament orientations at any position along their path. These local orientation vectors determine the alignments, θ, of the filaments in respect to the nominal coordinate system of the model ( Figure 9).…”

Section: Influence Of Fibre Misalignmentmentioning

confidence: 99%

“…Determined cross-sectional centre points of the filaments in different micrographs allow prediction of which points are connected in different slices. The open source software TexGen [28] is then used to fit a spline through the different measurement points which enables reconstruction of three-dimensional filament paths.…”

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confidence: 99%

Stochastic reconstruction of filament paths in fibre bundles based on two-dimensional input data

Gommer

Wedgwood

Brown

2015

Composites Part A: Applied Science and Manufacturing

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Abstract:Conventional optical microscopy is an inexpensive technique to analyse fibre bundle micro-structures. Compared to micro-computed tomography, the resolution is higher and larger samples sizes can be analysed. This provides, for example, detailed information of filament spacing which will affect subsequent properties. This paper proposes a probabilistic method to reconstruct paths of individual filaments from a series of two-dimensional micrographs. This allows three-dimensional filament arrangements to be reconstructed and the effects of local arrangements on properties to be quantified. For example, for the small sample analysed in this work, a 15% difference in strength values was found.

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Textile Reinforcements: Architectures, Mechanical Behavior, and Forming

Boisse

2014

Ceramic Matrix Composites

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Modelling the geometry of textile reinforcements for composites: TexGen

Cited by 78 publications

References 3 publications

Effects of layer shift and yarn path variability on mechanical properties of a twill weave composite

Effects of layer shift and yarn path variability on mechanical properties of a twill weave composite

Stochastic reconstruction of filament paths in fibre bundles based on two-dimensional input data

Textile Reinforcements: Architectures, Mechanical Behavior, and Forming

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