A Preliminary Study of Negative Poisson's Ratio of Laminated Fiber Reinforced Composites

Zhang, Ruguang; Yeh, Hsien-Liang; Yeh, Hsien-Yang

doi:10.1177/073168449801701806

Cited by 57 publications

(33 citation statements)

References 4 publications

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“…6,7 As reported by Herakovich, and, more recently, by others interested in the possibilities of negative Poisson's ratios, high values of the ratio, E 1 /G 12 , for the ply tend to promote low and eventually negative through-thickness Poisson's ratios. 8,[11][12][13] This can be seen in Figure 2, where unrelaxed carbon epoxy Gibson 3491…”

Section: Through-thickness Shear Modulimentioning

confidence: 90%

Through-thickness elastic constants of composite laminates

Gibson

2012

Journal of Composite Materials

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This article presents relationships for the through-thickness elastic constants of composite laminates, needed for modelling three-dimensional stress problems. Using the individual ply elastic constants together with the in-plane laminate elastic constants (from laminate theory) results in explicit relationships for, 13 , 23 , E 3 , G 13 and G 23 . The Poisson's ratio and Young's modulus expressions apply to all laminate types. The shear modulus relationships apply to balanced laminates, but are extendable to other laminate types. Relationships are developed here for angle-ply, cross-ply and quasi-isotropic laminates. Results are presented for glass/epoxy and carbon/epoxy laminates, above and below the resin T g . The importance of coupling stresses and their influence on 13 , 23 and E 3 is underlined. It is shown, for instance, that equating the laminate through-thickness modulus to the individual ply value can result in a significant under-estimate.

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Section: Through-thickness Shear Modulimentioning

confidence: 90%

Through-thickness elastic constants of composite laminates

Gibson

2012

Journal of Composite Materials

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“…Initially, modelling was carried out and this allows sequences to be predicted that could produce a negative Poisson's ratio either in-plane or out-of-plane [91,92]. In order to achieve this, one of the requirements of the individual lamina material is that it is highly anisotropic, making carbon fibre/epoxy resin a more suitable choice than either Kevlar/epoxy resin or glass fibre/epoxy resin, though all three material combinations have been investigated [93][94][95]. The majority of research work has been carried out on the carbon fibre composites, though, and is now concentrating on looking at how the properties of the laminates are affected.…”

Section: Fibre-reinforced Compositesmentioning

confidence: 99%

Auxetic materials

Alderson

2007

Proceedings of the Institution of Mechanical Engineers, Part G:

409

286

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Abstract:The current status of research into auxetic (negative Poisson's ratio) materials is reviewed, with particular focus on those aspects of relevance to aerospace engineering. Developments in the modelling, design, manufacturing, testing, and potential applications of auxetic cellular solids, polymers, composites, and sensor/actuator devices are presented. Auxetic cellular solids in the forms of honeycombs and foams are reviewed in terms of their potential in a diverse range of applications, including as core materials in curved sandwich panel composite components, radome applications, directional pass band filters, adaptive and deployable structures, MEMS devices, filters and sieves, seat cushion material, energy absorption components, viscoelastic damping materials, and fastening devices. The review of auxetic polymers includes the fabrication and characterization of microporous polymer solid rods, fibres, and films, as well as progress towards the first synthetic molecular-level auxetic polymer. Potential auxetic polymer applications include self-locking reinforcing fibres in composites, controlled release media, and self-healing films. Auxetic composite laminates and composites containing auxetic constituents are reviewed and enhancements in fracture toughness, and static and low velocity impact performance are presented to demonstrate potential in energy absorber components. Finally, the potential of auxetics as strain amplifiers, piezoelectric devices, and structural health monitoring components is presented.

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“…Equation (1) was also used in References [1,5,8,15] and it was originally adopted from References [6,12,13]. N, M, ε 0 and κ are in-plane force, moment, in-plane strain and curvature, respectively.…”

Section: Formulations Of the Through-thickness Poisson's Ratio And DImentioning

confidence: 99%

Transverse Moduli Effect on Dilatation and Through-Thickness Poisson’s Ratio of Composite Laminates

Yeh

2001

Journal of Reinforced Plastics and Composites

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In this paper, an investigation of the effect from the transverse elastic moduli of the lamina on the through-thickness Poisson's ratio and the dilatation for a general class of randomly-oriented composite laminate is presented. A dimensionless mathematical model has been used to study the influence of the various transverse elastic moduli E2 and E3 of lamina on the through-thickness Poisson's ratio and the dilatation of the laminate. The results from the analysis of this dimensionless mathematical model will provide a set of general guidelines for designing the value of through-thickness Poisson's ratio and the dilatation of the composite laminates to meet various requirements in engineering application.

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A Preliminary Study of Negative Poisson's Ratio of Laminated Fiber Reinforced Composites

Cited by 57 publications

References 4 publications

Through-thickness elastic constants of composite laminates

Through-thickness elastic constants of composite laminates

Auxetic materials

Transverse Moduli Effect on Dilatation and Through-Thickness Poisson’s Ratio of Composite Laminates

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