The Preparation of Auxetic Foams by Three-Dimensional Printing and Their Characteristics

Repeatable auxetic foams are produced using three‐dimensional printing technologies. This methodology is applied here for the first time to produce playable polymeric auxetic foams with an idealized re‐entrant cellular structure. During uniaxial tensile stress, the foams show negative Poisson's...

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Bibliographic Details
Published in:Advanced engineering materials 2013-10, Vol.15 (10), p.980-985
Main Authors: Critchley, Richard, Corni, Ilaria, Wharton, Julian A., Walsh, Frank C., Wood, Robert J. K., Stokes, Keith R.
Format: Article
Language:English
Subjects:
Exact sciences and technology
Fundamental areas of phenomenology (including applications)
Physics
Solid mechanics
Static elasticity (thermoelasticity...)
Structural and continuum mechanics
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Summary:Repeatable auxetic foams are produced using three‐dimensional printing technologies. This methodology is applied here for the first time to produce playable polymeric auxetic foams with an idealized re‐entrant cellular structure. During uniaxial tensile stress, the foams show negative Poisson's ratios as low as −1.18. The experimental Poisson's ratios of the auxetic foams are compared against the data predicted by a three‐dimensional mathematical model.
ISSN:1438-1656
1527-2648
DOI:10.1002/adem.201300030