A multiscale damage and crack opening model for the prediction of flow path in laminated composite

Bois, Christophe; Malenfant, Jean-Charles; Wahl, Jean; Danis, Michel

doi:10.1016/j.compscitech.2014.04.002

Cited by 13 publications

(11 citation statements)

References 25 publications

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“…At low pressure, the pipe does not recover its initial permeability. This correlates with a partial closure of cracks due to residual stresses of thermo-mechanical origin caused by cooling after curing at 120°C [10,30], and irreversible shear strains specific to [+45/À45] stacking sequences [4].…”

Section: Resultsmentioning

confidence: 89%

“…In future studies, tests will be performed on various laminate lay-ups in order to understand the role of multi-axial stress state according to ply direction in leak path creation. These results will be combined with micrography and microtomography observations to improve damage evolution laws and the effect of crack length and distribution will be added to the previous model developed by the authors [10].…”

Section: Conclusion and Outlook For Further Researchmentioning

confidence: 99%

“…crack density and delamination length, from the loading history and the material properties [4,[6][7][8][9][10][11][12]. Damage state and current loading can then be used as input for crack opening displacement prediction [10,11,13], and also for permeability prediction [11][12][13][14][15][16][17]. Yet the prediction of crack connections managed by crack length and distribution remains a core issue and still requires experimental data on the link between load, number of leak paths and permeability.…”

Section: Introductionmentioning

confidence: 99%

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A new device to measure permeability evolution under pressure loading: Application to CFRP pipes

et al. 2017

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This paper presents an experimental setup to measure permeability evolution induced by mechanical loading. The experiment consists in pressurising a pipe-specimen. Internal pressure is used to load and to measure permeability. The external face of the pipe is accessible, so that leak paths can be localised and quantified. In order to avoid premature cracking of the specimen due to the device, sealing components were designed using Finite Element Analysis with respect to the stiffness of pipes to be tested. Although the current design is used here to test carbon composite pipes, it can be easily adapted to other materials. The design was validated by measuring permeability on an impermeable pipe. The experimental setup and method were applied to a composite filament-wound pipe. Results give substantial quantitative information on the relationship between the number of leak paths and the increase in material permeability.

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Section: Resultsmentioning

confidence: 89%

Section: Conclusion and Outlook For Further Researchmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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A new device to measure permeability evolution under pressure loading: Application to CFRP pipes

et al. 2017

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“…Micro-scale models and multi-scale models describing the properties of composite materials have been sprung up recent years. In these models, the information about fibers, resin, interface, weaving details of the fabric and various kinds of defects were included [20,21,22,23,24]. In this paper, we aim to create a model to study the details about when a crack initiates and how it propagates without pre-cracks and the correlation of the laminate’s elastic properties to the cracks.…”

Section: Introductionmentioning

confidence: 99%

A Simplified Computational Strategy Focused on Resin Damage to Study Matrix Cracking of The Cross-Ply Laminates Under Uniaxial Tension Load

Sun

Wang

et al. 2019

Materials

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Transverse cracking is probably the first and most dominant mode of damage in composite materials. In this paper, transverse cracking of cross-ply [02/90n]s (n = 2,3,4) laminates under uniaxial tension load was studied by means of experimental and numerical methods. In the numerical simulations, a simplified computational strategy only focusing on the damage of the resin was proposed and the mechanical response of the cracking cross-ply laminates was studied by finite element analysis of multi-scale representative volume elements (RVEs). In the RVEs, the longitudinal 0° plies were represented by macro-scale, homogeneous, orthotropic elastic solids while the 90° plies were modeled by the discrete fibers and the surrounding matrix resin in micro-scale. Based on researching the critical longitudinal mechanical strain ε x which initiates the cracks, the in-situ transverse ply strength and the stiffness degradation of the transverse plies, the simplified computational strategy proposed was proven correct. In addition, the crack initiation is sensitive to residual stress. Higher process-induced residual stress levels are dangerous to laminates, leading to early crack initiation.

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“…The ability to predict this sub-critical damage build-up in a single model is of prime importance to understanding composite structure failure. Existing permeability models have been based on repeating 2D and 3D geometries, with pre-existing cracks defined [20,21,[26][27][28]. This study, through meso-level modelling of laminates, presents a novel methodology to predict random (Weibull and defect based) crack initiation and growth in composites laminates.…”

Section: Introductionmentioning

confidence: 99%

A combined XFEM and cohesive zone model for composite laminate microcracking and permeability

Grogan

Brádaigh

Leen

2015

Composite Structures

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A multiscale damage and crack opening model for the prediction of flow path in laminated composite

Cited by 13 publications

References 25 publications

A new device to measure permeability evolution under pressure loading: Application to CFRP pipes

A new device to measure permeability evolution under pressure loading: Application to CFRP pipes

A Simplified Computational Strategy Focused on Resin Damage to Study Matrix Cracking of The Cross-Ply Laminates Under Uniaxial Tension Load

A combined XFEM and cohesive zone model for composite laminate microcracking and permeability

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