Static and high constant strain rate loading on auxetic and conventional PU foam

FL Scarpa, A Cannas, JR Yates

Research output: Contribution to journalArticle (Academic Journal)

1 Citation (Scopus)

Abstract

A new type of auxetic (Negative Poisson's ratio) open cell polyurethane foam has been tested under static tensile tests and high constant strain rate loading to assess crashworthiness properties. The foam has been produced by transforming open cell rigid grey polyurethane foam with a manufacturing route similar to production processes published in open literature. Uniaxial tests in tension and compression have been performed on samples of conventional open cell grey PU foam and the corresponding transformed auxetic material, Constant strain rate loading (up to 54s(-1)) has been applied on the foam samples using a cam plastometer test machine. The experimental results quantified the mechanical properties of the auxetic foam and showed it to have a lower Young's modulus than the precursor foam in tension and a comparable value in compression, but with high elongation characteristics under tensile loading. The dynamic crush-loading tests showed that the rigid PU foam did not demonstrate any notable resilience under impact, while the auxetic foam showed stress-strain curves with low sensitivity to the constant strain rate
Translated title of the contributionStatic and high constant strain rate loading on auxetic and conventional PU foam
Original languageEnglish
Pages (from-to)11 - 14
Number of pages4
JournalJournal of Advanced Materials
Volume37
Publication statusPublished - Mar 2005

Bibliographical note

Publisher: SAMPE PUBLISHERS, 1161 PARKVIEW DRIVE, COVINA, CA 91722 USA
Other identifier: IDS Number: 004BZ

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