Prediction of thermal expansion coefficients of plain weave fabric composites

Naik, N.K.; Ganesh, Venkata

doi:10.1016/0263-8223(93)90062-u

Cited by 27 publications

(6 citation statements)

References 8 publications

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“…10,11 Despite the slightly lower properties of 5HS composites, these results validate the use of equivalent unidirectional cross-ply to model the elastic behaviour of periodic 5HS woven fabric composite material. Table 8 presents the numerical values of the CTE for the 5HS and the cross-ply unit cells.…”

Section: Resultssupporting

confidence: 60%

“…Overall, these results are in agreement with previous experimental and numerical studies on the thermo-mechanical behaviour of plain weave fabric composites by Ganesh and Naik 9 and Naik and Ganesh. 10,11 Despite the slightly lower properties of 5HS composites, these results validate the use of equivalent unidirectional cross-ply to model the elastic behaviour of periodic 5HS woven fabric composite material.…”

Section: Resultssupporting

confidence: 55%

“…A ply configuration with no relative shift between the adjacent ply, corresponding to the arrangement modelled by the unit cell, had a lower CTE than a configuration with relative ply shift, which is more likely to represent the actual tested samples. Ganesh and Naik 9 and Naik and Ganesh 10,11 also demonstrated that fabric with lower strand crimp results in lower CTE values for the plain weave laminate compared to the cross-ply laminate. The 5HS model can be considered as a low strand crimp woven laminate, and therefore the obtained results agree well with those conclusions.…”

Section: Resultsmentioning

confidence: 92%

“…However, these models only considered the undulation in one direction and restrict the two-dimensional (2D) woven structure to one dimension. Naik and Shembekar, 6,7 Shembekar and Naik, 8 Ganesh and Naik 9 and Naik and Ganesh 10,11 developed a 2D woven fabric model to predict the elastic properties and the coefficients of thermal expansion (CTE) of plain weave reinforced composites at the ply and laminate level. The fibre architecture geometry in the ply, as well as the positions of the different plies in the laminate, with respect to each other, were considered.…”

Section: Introductionmentioning

confidence: 99%

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Thermo-mechanical properties of 5-harness satin fabric composites

Khoun

Challagulla

Hubert

2012

Journal of Composite Materials

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The use of woven textile reinforcements in composite structures increased significantly in the past decades due to their interesting properties over unidirectional fibres. Therefore, the prediction of the thermo-mechanical properties of woven fabric composites is essential from a design and manufacturing standpoint. A micromechanical approach based on finite element method that utilizes three-dimensional unit cell was applied to predict the effective properties of a periodic woven fabric composite material. Using the resin processing properties models such as cure kinetics, shrinkage, glass transition temperature and elastic modulus models, the development of the periodic woven fabric composite material thermo-mechanical properties, as the cure progresses was predicted. The residual strains and stresses generated in the composite unit cell during the cure were also predicted and linked with the development of the material properties. The effective properties of the cured woven fabric composite material were compared to the one of an equivalent cross-ply composite material to verify the validity of neglecting the fibre waviness while modelling woven fabric composite.

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Section: Resultssupporting

confidence: 60%

Section: Resultssupporting

confidence: 55%

Section: Resultsmentioning

confidence: 92%

Section: Introductionmentioning

confidence: 99%

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Thermo-mechanical properties of 5-harness satin fabric composites

Khoun

Challagulla

Hubert

2012

Journal of Composite Materials

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“…[17][18][19] The classical lamination theory forms the basic analytical tool for these developments. 20 Naik and Shembekar 21,22 and Naik and Ganesh 23 have developed 2D elastic models for an elastic analysis of a plain weave fabric lamina, taking into account the actual fabric structure by considering the fiber undulation and continuity along both the warp and weft directions, and the presence of a possible gap between adjacent yarns, the real cross-section of yarn, and the possible unbalanced nature of the plain fabric lamina. Their work has been recently extended to the strength and failure behavior analysis.…”

Section: Introductionmentioning

confidence: 99%

Prediction of mechanical properties of three-dimensional fabric composites reinforced by transversely isotropic carbon fibers

Karki

2014

Journal of Composite Materials

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Three-dimensional fabric composites have evolved as an attractive structural material for multi-directional load bearing and impact application. However, research on prediction of their behavior before being fabricated is inadequate. This article reports a two-step modeling approach for predicting the effective mechanical properties of three-dimensional fabric carbon fiber-reinforced composites. In step one, the micro-heterostructural composites were represented by microscale cylindrical, square, or hexagonal prismatic representative volume elements, containing a long carbon fiber surrounded by polymer matrix, taking into account the transversely isotropic properties of carbon fibers. The mechanical properties of each representative volume element were extracted from the modeling results of uniaxial tensile, lateral expansion, and transverse shear tests, using appropriately derived formulae, and averaged as the equivalent mechanical properties of the micro-heterostructures. In step two, a three-dimensional fabric composite unit cell was represented by a three-dimensional finite element model, taking into account the fiber orientations and fabric architecture. A three-dimensional orthogonal fabric carbon fiber-reinforced epoxy composite was selected as the case study material. The overall orthotropic mechanical properties of the composites were predicted by conducting tensile and shear tests on the unit cell. The modeling results show that the Young’s moduli in fiber oriented directions and shear moduli are significantly higher than those of the matrix. The shear moduli of shearing fiber cross-sections are even much higher than that of shearing along fiber longitudinal direction. Carbon fiber can improve structural stability by lowering the Poisson’s ratios of the composites. The modeling results were compared with and validated by the experimental tests.

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Numerical modelling of woven fabric composite materials

Naik¹

1996

Numerical Analysis and Modelling of Composite Materials

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Prediction of thermal expansion coefficients of plain weave fabric composites

Cited by 27 publications

References 8 publications

Thermo-mechanical properties of 5-harness satin fabric composites

Thermo-mechanical properties of 5-harness satin fabric composites

Prediction of mechanical properties of three-dimensional fabric composites reinforced by transversely isotropic carbon fibers

Numerical modelling of woven fabric composite materials

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