Strain rate dependence of stiffness and poisson's ratio of auxetic open cell PU foams

PASTORINO, P., SCARPA, F., PATSIAS, S., YATES, J. R., HAAKE, Steve and RUZZENE, M. (2007). Strain rate dependence of stiffness and poisson's ratio of auxetic open cell PU foams. Physica status solidi (b), 244 (3), 955-965.

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Link to published version:: https://doi.org/10.1002/pssb.200572714
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    Abstract

    The paper describes the manufacturing and tensile testing of auxetic (negative Poisson's ratio) thermoplastic polyurethane and polyester urethane foams, under quasi-static and constant strain rate loading. The foams are produced from conventional flexible polyurethane basis following a manufacturing route developed in previous works. The Poisson's ratio behaviour over compressive strain has been analyzed using an Image Data processing technique based on Edge Detection from digital images recorded using camcorders and high speed cameras. The measurements indicate that higher strain rate loading implies stiffening effects on the stress-strain curves, and significant increase of the magnitudes of the Poisson's ratios with increasing compressive strains.

    Item Type: Article
    Research Institute, Centre or Group - Does NOT include content added after October 2018: Centre for Sports Engineering Research
    Identification Number: https://doi.org/10.1002/pssb.200572714
    Page Range: 955-965
    Depositing User: Carole Harris
    Date Deposited: 25 Jun 2010 15:08
    Last Modified: 11 Oct 2018 13:40
    URI: http://shura.shu.ac.uk/id/eprint/2197

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