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The University of Southampton

Research project: Impact and erosion resistant materials

Currently Active: 

3D printing of auxetic foams - Auxetic materials are extremely attractive as engineering materials due to their enhanced mechanical properties.  To date, auxetic performance has been documented at a range of length scales, from materials including polymers, metals, ceramics, composites, laminates, and fibres.  This work has fabricated repeatable auxetic foams produced using a 3D printing technology (additive manufacturing).  This methodology is applied here for the first time to produce playable polymeric auxetic foams with an idealised re-entrant cellular structure.

The cellular microstructure of a 3D printed auxetic form
3D printed auxetic form

Studies have been carried out to optimize the fabrication process and the characterization of the produced auxetic materials in terms of their energy absorbing ability.  To date a range of auxetic foam samples have been manufactured and their Poisson's ratio behaviour assessed.  The main application of the polymeric auxetic foams studied in this project is to disperse impact energy in hybrid systems.


This project is part a of wider EPSRC-Dstl funded project EP/G042195/1.

Industrial Partners:-  Dstl,

Related research groups

national Centre for Advanced Tribology at Southampton (nCATS)
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