Results 181 to 190 of about 6,969 (230)

Auxetic materials

Proceedings of the Institution of Mechanical Engineers, Part G: Journal of Aerospace Engineering, 2007
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.
A Alderson, K L Alderson
openaire   +1 more source

Review on auxetic materials

Journal of Materials Science, 2004
Although a negative Poisson's ratio (that is, a lateral extension in response to stretching) is not forbidden by thermodynamics, for almost all common materials the Poisson's ratio is positive. In 1987, Lakes first discovered negative Poisson's ratio effect in polyurethane (PU) foam with re-entrant structures, which was named anti-rubber, auxetic, and ...
Wei Yang   +4 more
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Auxeticity of cubic materials

physica status solidi (b), 2009
AbstractA general expression for the directionally anisotropic Poisson's ratio (PR) of cubic materials under external pressure is discussed. It is expressed in terms of the elastic moduli ratios, X = G/K, Y = G/W, where K is the bulk modulus and G, W are shear moduli, and where the mechanical stability criteria are taken into account.
A. C. Brańka   +2 more
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Non‐porous grooved single‐material auxetics

physica status solidi (b), 2015
Over the years, great advances have been made in the field of auxetic metamaterials where one of the main focuses was the production of systems which can be produced through simple and relatively inexpensive means. In this work, auxetic systems created through the introduction of elliptical grooves, meant to mimic the rotating units mechanism, are ...
Mizzi L., Gatt R., Grima J. N.
openaire   +2 more sources

Auxetic materials: Avoiding the shrink

Nature, 2003
Materials that expand laterally when stretched can act as molecular-scale strain amplifiers. This amplification might be exploited in nature and in future technologies.
openaire   +2 more sources

Auxetic Cellular Materials and Structures

Aerospace, 2005
Auxetic materials and structures exhibit the very unusual property of becoming wider when stretched and narrower when squashed (i.e. they have a negative ‘Poisson’s ratio’). This property results in many beneficial effects in the characteristics of the system that make auxetics superior to conventional systems in many practical and high tech ...
Joseph N. Grima   +4 more
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Auxetic mechanics of crystalline materials

Mechanics of Solids, 2010
In the present paper, we analyze uniaxial deformation of crystals of different systems with negative Poisson’s ratios, known as auxetics. The behavior of auxetic crystals is studied on the basis of extensive knowledge on the experimental values of elastic constants of different crystals, gathered in the well-known Landolt-Bornstein tables.
R. V. Goldstein   +2 more
openaire   +1 more source

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