Viscoelastic Composites: Dynamic and Acoustic Properties of Cellular Materials with Negative Poisson's Ratio

Abstract

Micro-deformation studies of conventional and negative Poisson's ratio copper foams were conducted holographically. Inhomogeneous, non-affine deformation was observed holographically in both foam materials. The negative Poisson's ratio material with a permanent volumetric compression ratio 2.2 exhibited a substantially greater non-affine deformation than the conventional material, in contrast to foam with compression ratio 3.0 examined earlier.

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Document Details

Document Type
Technical Report
Publication Date
Jul 28, 1991
Accession Number
ADA251899

Entities

People

  • R. S. Lakes

Organizations

  • University of Iowa

Tags

Communities of Interest

  • Biomedical
  • Engineered Resilient Systems

DTIC Thesaurus Topics

  • Composite Materials
  • Elastic Properties
  • Materials
  • Materials Laboratories
  • Materials Processing
  • Materials Science
  • Materials Testing
  • Mechanical Engineering
  • Mechanical Properties
  • Mechanical Working
  • Mechanics
  • Micromechanics
  • Modulus Of Elasticity
  • Polymer Matrix Composites
  • Reinforced Plastics
  • Stress Strain Relations
  • Yield Strength

Fields of Study

  • Materials science

Readers

  • Mechanical Engineering/Mechanics of Materials.