Anisotropic polyurethane foam with Poisson's ratio greater than 1

Taeyong Lee; R. S. Lakes

doi:10.1023/A:1018557107786

Anisotropic polyurethane foam with Poisson's ratio greater than 1

Taeyong Lee, R. S. Lakes

Department of Mechanical & Biomedical Engineering

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

64 Scopus citations

Abstract

Anisotropic polymer foams have been prepared, which exhibit a Poisson's ratio exceeding 1, and ratios of longitudinal to transverse stiffness exceeding 50. The foams are as much as 20 times stiffer in the longitudinal direction than the foams from which they were derived. The transformation process involved applying to open-cell polyurethane foam an axial strain of 25 to 45%, at a temperature above the softening point, followed by cooling under axial strain.

Original language	English
Pages (from-to)	2397-2401
Number of pages	5
Journal	Journal of Materials Science
Volume	32
Issue number	9
DOIs	https://doi.org/10.1023/A:1018557107786
State	Published - 1997

Bibliographical note

Funding Information:
Support of this research by the Boeing ACTAS program is gratefully acknowledged.

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abstract = "Anisotropic polymer foams have been prepared, which exhibit a Poisson's ratio exceeding 1, and ratios of longitudinal to transverse stiffness exceeding 50. The foams are as much as 20 times stiffer in the longitudinal direction than the foams from which they were derived. The transformation process involved applying to open-cell polyurethane foam an axial strain of 25 to 45%, at a temperature above the softening point, followed by cooling under axial strain.",

author = "Taeyong Lee and Lakes, {R. S.}",

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Anisotropic polyurethane foam with Poisson's ratio greater than 1

Abstract

Bibliographical note

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