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Journal of Materials Science

, Volume 27, Issue 17, pp 4678–4684 | Cite as

Non-linear properties of polymer cellular materials with a negative Poisson's ratio

  • J. B. Choi
  • R. S. Lakes
Papers

Abstract

Negative Poisson's ratio polymeric cellular solids (re-entrant foams) were studied to ascertain the optimal processing procedures which give rise to the smallest value of Poisson's ratio. The non-linear stress-strain relationship was determined for both conventional and re-entrant foams; it depended upon the permanent volumetric compression achieved during the processing procedure. Poisson's ratio of re-entrant foam measured as a function of strain was found to have a relative minimum at small strains. The toughness of re-entrant foam increased with permanent volumetric compression, and hence with density.

Keywords

Polymer Foam Optimal Processing Small Strain Processing Procedure 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© Chapman & Hall 1992

Authors and Affiliations

  • J. B. Choi
    • 1
    • 2
  • R. S. Lakes
    • 1
  1. 1.Department of Mechanical EngineeringUniversity of IowaIowa CityUSA
  2. 2.Department of Biomedical Engineering, and Center for Laser Science and EngineeringUniversity of IowaIowa CityUSA

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