Abstract
Foam materials based on metal and several polymers were transformed so that their cellular architecture became re-entrant, i.e. with inwardly protruding cell ribs. Foams with re-entrant structures exhibited negative Poisson's ratios as well as greater resilience than conventional foams. Foams with negative Poisson's ratios were prepared using different techniques and materials and their mechanical behaviour and structure evaluated.
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Friis, E.A., Lakes, R.S. & Park, J.B. Negative Poisson's ratio polymeric and metallic foams. J Mater Sci 23, 4406–4414 (1988). https://doi.org/10.1007/BF00551939
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DOI: https://doi.org/10.1007/BF00551939