Towards the design of sandwich panel composites with enhanced mechanical and thermal properties by variation of the in-plane Poisson's ratios

Whitty, Justin; Alderson, Andrew; Myler, Peter; Kandola, Baljinder K.

doi:10.1016/s1359-835x(03)00058-7

Cited by 61 publications

(44 citation statements)

References 14 publications

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“…Researchers have studied the hardness properties of many of the synthetic auxetic materials produced to date, and enhancements have been found across the board in materials such as polymeric and metallic foams [10,11], carbon fiber composite laminates [12], and micro porous polymers [13,14]. Alderson et al [15,16] studied the hardness of polyethylene and Ultra High Molecular Weight Polyethylene (UHMWPE) with a negative Poisson's ratio and found that the presence of a negative Poisson's ratio resulted in enhancements of the hardness by up to a factor of 2 over conventional UHMWPE.…”

Section: Properties Of Auxetic Materialsmentioning

confidence: 99%

Engineered Warp Knit Auxetic Fabrics

Ugbolue¹,

Kim²,

Warner³

et al. 2012

J Textile Sci Engg

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Section: Properties Of Auxetic Materialsmentioning

confidence: 99%

Engineered Warp Knit Auxetic Fabrics

Ugbolue¹,

Kim²,

Warner³

et al. 2012

J Textile Sci Engg

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“…In addition to the theoretical and/or conceptual understanding [1][2][3][4] in recent years, auxetic materials have also been modeled via analytical [2][3][4], molecular mechanics [4][5][6], Monte Carlo Simulations [7], ab initio [8], and homogenization [9] techniques, with the material systems covered for foam materials (e.g. [10]), films [11], honey combs [12], lattice structures [13,14], fractal structures [15], molecules [6,7], composites [16,17] and sandwich structures [18,19].…”

Section: Introductionmentioning

confidence: 99%

“…At a more downstream scope, auxetic materials have been reported in terms of their processing and/or construction [17,20,21], and design techniques/optimization [19,[22][23][24]. Whilst it is not surprising that novel properties are normally being applied for engineering construction, a recent report proposed the use of auxetic materials for biomedical application [24].…”

Section: Introductionmentioning

confidence: 99%

On simultaneous positive and negative Poisson's ratio laminates

Lim

2007

Physica Status Solidi (b)

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PACS 62.20. Dc, 81.05.Qk, 81.05.Zx Studies on the mechanical behavior of materials are often performed on the assumption of positive Poisson's ratio except for auxetic materials. Auxetic materials and structures are intriguing systems that exhibit negative Poisson's ratio. Recently some investigation were made on semi-auxetic materials in terms of their directional and positional auxeticity. In this paper we furnish a simple example of a 3-ply laminate consisting of isotropic plies whereby the sign of its effective Poisson's ratio changes when the loading mode changes between pure axial loading and pure bending. In addition, both positive and negative Poisson ratio behaviors do not cancel one another, but are simultaneously manifested when the abovementioned loading modes are combined.

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“…The analysis demonstrates that the Poisson's ratio of a composite structure could be reduced from positive to negative, when the volume of its inclusions reduces as it closes. Besides, according to the classic theory of solid mechanics, this sort of materials potentially exhibits other specific mechanical properties [12][13][14][15][16] induced by the NPR, such as enhanced levels of indentation resistance, 17 shear stiffness, [17][18][19] fracture toughness, 20,21 and energy-absorption ability. 20,22,23 However, the research stopped at the theoretical stage because the inclusion with closure effect is hard to implement in real structural materials.…”

Section: Introductionmentioning

confidence: 99%

Tailoring structure of inclusion with strain-induced closure to reduce Poisson's ratio of composite materials

Hou

Silberschmidt

2014

Journal of Applied Physics

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Tailoring structure of inclusion with strain-induced closure to reduce Poisson's ratio of composite materials A novel 3D continuum shell structure is introduced as inclusion for composite materials with special mechanical properties in this paper. Its geometry is based on a hollow re-entrant tetrahedron. In a composite, such an inclusion can demonstrate a closure effect induced by external compression. Its specific deformation mechanism results in a special character of deformation and affects effective (global) mechanical properties of the composite. A finite-element method is used to explore quantitatively and qualitatively the deformation mechanism of the suggested inclusion and its effect on the overall mechanical performance of the composite. In this study, geometrical features of the inclusion are used as parameters. The obtained results demonstrate that this kind of inclusion could reduce the composite's Poisson's ratio; moreover, its magnitude is adjustable by changing geometrical parameters of the inclusion. Besides, an overall hardening effect is achieved for the composite, with the magnitude of global stiffness also significantly affected by geometrical features of the inclusion. Thus, the developed inclusion actually provides a potential to develop new composites with a tunable Poisson's ratio and enhanced mechanical properties .V

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Towards the design of sandwich panel composites with enhanced mechanical and thermal properties by variation of the in-plane Poisson's ratios

Cited by 61 publications

References 14 publications

Engineered Warp Knit Auxetic Fabrics

Engineered Warp Knit Auxetic Fabrics

On simultaneous positive and negative Poisson's ratio laminates

Tailoring structure of inclusion with strain-induced closure to reduce Poisson's ratio of composite materials

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