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- Auxetics abstract "Auxetics are materials that have a negative Poisson's ratio. When stretched, they become thicker perpendicular to the applied force. This occurs due to their hinge-like structures, which flex when stretched. Auxetic materials can be single molecules or a particular structure of macroscopic matter.Such materials are expected to have mechanical properties such as high energy absorption and fracture resistance. Auxetics may be useful in applications such as body armor, packing material, knee and elbow pads, robust shock absorbing material, and sponge mops.Auxetics can be illustrated with an inelastic string wound around an elastic cord. When the ends of the structure are pulled apart, the inelastic string straightens while the elastic cord stretches and winds around it, increasing the structure's effective volume.The term auxetic derives from the Greek word αὐξητικός (auxetikos) which means "that which tends to increase" and has its root in the word αὔξησις, or auxesis, meaning "increase" (noun). This terminology was coined by Professor Ken Evans of the University of Exeter.The earliest published example of a synthetic auxetic material was in Science in 1987, entitled "Foam structures with a Negative Poisson's Ratio" by R.S. Lakes from the University of Iowa. The use of the word auxetic to refer to this property probably began in 1991.Designs of composites with inverted hexagonal periodicity cell (auxetic hexagon), possessing negative Poisson's ratio, were published in 1985,,,,Typically, auxetic materials have low density, which is what allows the hinge-like areas of the auxetic microstructures to flex.Examples of auxetic materials include: Certain rocks and minerals Living bone tissue (although this is only suspected) Specific variants of polytetrafluorethylene polymers such as Gore-Tex Paper, all types. If a paper is stretched in an in-plane direction it will expand in its thickness direction due to its network structure.Tailored structures designed to exhibit special designed Poisson's ratios.↑ ↑ ↑ ↑ ↑ ↑ ↑ ↑ ↑ ↑ ↑ ↑ 12.0 12.1 ↑ ↑ ↑".
- Auxetics thumbnail Auxetic_Hexagon.svg?width=300.
- Auxetics wikiPageExternalLink Poisson.html.
- Auxetics wikiPageExternalLink www.auxetic.info.
- Auxetics wikiPageExternalLink auxfoam.mov.
- Auxetics wikiPageExternalLink watch?v=HJ1Ck6FIqwU.
- Auxetics wikiPageID "1616044".
- Auxetics wikiPageRevisionID "604734412".
- Auxetics hasPhotoCollection Auxetics.
- Auxetics subject Category:Geometric_shapes.
- Auxetics subject Category:Materials.
- Auxetics type Abstraction100002137.
- Auxetics type Attribute100024264.
- Auxetics type GeometricShapes.
- Auxetics type Material114580897.
- Auxetics type Materials.
- Auxetics type Matter100020827.
- Auxetics type Part113809207.
- Auxetics type PhysicalEntity100001930.
- Auxetics type Property104916342.
- Auxetics type Relation100031921.
- Auxetics type Shape105064037.
- Auxetics type SpatialProperty105062748.
- Auxetics type Substance100019613.
- Auxetics comment "Auxetics are materials that have a negative Poisson's ratio. When stretched, they become thicker perpendicular to the applied force. This occurs due to their hinge-like structures, which flex when stretched. Auxetic materials can be single molecules or a particular structure of macroscopic matter.Such materials are expected to have mechanical properties such as high energy absorption and fracture resistance.".
- Auxetics label "Auksetyk".
- Auxetics label "Auxetics".
- Auxetics label "Auxetisches Material".
- Auxetics label "Auxétisme".
- Auxetics label "Material augético".
- Auxetics label "Materiali auxetici".
- Auxetics label "Ауксетики".
- Auxetics label "أوكسيتك".
- Auxetics sameAs Auxetický_materiál.
- Auxetics sameAs Auxetisches_Material.
- Auxetics sameAs Material_augético.
- Auxetics sameAs Auxétisme.
- Auxetics sameAs Materiali_auxetici.
- Auxetics sameAs Auksetyk.
- Auxetics sameAs m.05gxmd.
- Auxetics sameAs Q789683.
- Auxetics sameAs Q789683.
- Auxetics sameAs Auxetics.
- Auxetics wasDerivedFrom Auxetics?oldid=604734412.
- Auxetics depiction Auxetic_Hexagon.svg.
- Auxetics isPrimaryTopicOf Auxetics.