In situ three-dimensional X-ray microtomography of an auxetic foam under tension

S. A. McDonald; N. Ravirala; P. J. Withers; A. Alderson

doi:10.1016/j.scriptamat.2008.10.013

In situ three-dimensional X-ray microtomography of an auxetic foam under tension

S. A. McDonald
, N. Ravirala
, P. J. Withers
, A. Alderson

Research output: Contribution to journal › Article › Research › peer-review

61 Citations (Scopus)

Abstract

X-ray microtomography has the potential to unambiguously identify the predominant deformation mechanisms responsible for the auxetic response of polymeric foams. It has been performed in situ on an auxetic polyurethane foam subjected to incremental uniaxial tensile loading. A Poisson's ratio of -0.20 measured from localized microstructural changes observed during the tomographic sequence compares well with the bulk value of -0.21 obtained by videoextensometry. Evidence obtained by digital image correlation for straightening of bent ribs and rotation of junctions connecting ribs during straining is presented.

Original language	English
Pages (from-to)	232-235
Number of pages	4
Journal	Scripta Materialia
Volume	60
Issue number	4
DOIs	https://doi.org/10.1016/j.scriptamat.2008.10.013
Publication status	Published - Feb 2009
Externally published	Yes

Keywords

Auxetic foams
Digital image correlation
Mechanical properties
Microstructure
X-ray microtomography

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10.1016/j.scriptamat.2008.10.013

Cite this

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title = "In situ three-dimensional X-ray microtomography of an auxetic foam under tension",

abstract = "X-ray microtomography has the potential to unambiguously identify the predominant deformation mechanisms responsible for the auxetic response of polymeric foams. It has been performed in situ on an auxetic polyurethane foam subjected to incremental uniaxial tensile loading. A Poisson's ratio of -0.20 measured from localized microstructural changes observed during the tomographic sequence compares well with the bulk value of -0.21 obtained by videoextensometry. Evidence obtained by digital image correlation for straightening of bent ribs and rotation of junctions connecting ribs during straining is presented.",

keywords = "Auxetic foams, Digital image correlation, Mechanical properties, Microstructure, X-ray microtomography",

author = "McDonald, \{S. A.\} and N. Ravirala and Withers, \{P. J.\} and A. Alderson",

year = "2009",

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T1 - In situ three-dimensional X-ray microtomography of an auxetic foam under tension

AU - McDonald, S. A.

AU - Ravirala, N.

AU - Withers, P. J.

AU - Alderson, A.

PY - 2009/2

Y1 - 2009/2

N2 - X-ray microtomography has the potential to unambiguously identify the predominant deformation mechanisms responsible for the auxetic response of polymeric foams. It has been performed in situ on an auxetic polyurethane foam subjected to incremental uniaxial tensile loading. A Poisson's ratio of -0.20 measured from localized microstructural changes observed during the tomographic sequence compares well with the bulk value of -0.21 obtained by videoextensometry. Evidence obtained by digital image correlation for straightening of bent ribs and rotation of junctions connecting ribs during straining is presented.

AB - X-ray microtomography has the potential to unambiguously identify the predominant deformation mechanisms responsible for the auxetic response of polymeric foams. It has been performed in situ on an auxetic polyurethane foam subjected to incremental uniaxial tensile loading. A Poisson's ratio of -0.20 measured from localized microstructural changes observed during the tomographic sequence compares well with the bulk value of -0.21 obtained by videoextensometry. Evidence obtained by digital image correlation for straightening of bent ribs and rotation of junctions connecting ribs during straining is presented.

KW - Auxetic foams

KW - Digital image correlation

KW - Mechanical properties

KW - Microstructure

KW - X-ray microtomography

UR - https://www.scopus.com/pages/publications/56249099003

U2 - 10.1016/j.scriptamat.2008.10.013

DO - 10.1016/j.scriptamat.2008.10.013

M3 - Article

AN - SCOPUS:56249099003

SN - 1359-6462

VL - 60

SP - 232

EP - 235

JO - Scripta Materialia

JF - Scripta Materialia

IS - 4

ER -

In situ three-dimensional X-ray microtomography of an auxetic foam under tension

Abstract

Keywords

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