Structural Composites with Tuned EM Chirality

Abstract

We have developed and implemented methods to predict the overall EM properties tensors including the coupling tensors based on the geometry and microstructure of an array of scattering elements, and fabricated and measured both the HM and mechanical properties of some simple typical samples under the present seedling funding. Figure 2 in the report, shows our measured stress-strain relations for a typical braid under both dry (left) and resin-impregnated conditions (center), in preparation for developing braided structural composites with controlled EM chirality. In Figure 2 (right) we show a typical (measured) EM data for a woven composite with embedded alternating left- and right-handed copper coils. We are preparing an experimental setup to measure the chirality parameters as well as the dielectric constant for fully left- or right-handed structures.

Open PDF

Document Details

Document Type
Technical Report
Publication Date
Feb 04, 2009
Accession Number
ADA524300

Entities

People

  • Sia Nemat-nasser

Organizations

  • University of California, San Diego

Tags

Communities of Interest

  • Advanced Electronics

DTIC Thesaurus Topics

  • Composite Materials
  • Couplings
  • Dielectric Permittivity
  • Electric Fields
  • Geometry
  • Magnetic Fields
  • Materials
  • Mechanical Properties
  • Microstructure
  • Plant Structures
  • Scattering
  • Stress Strain Relations
  • Stresses

Readers

  • Microwave Engineering.
  • Reinforced Composite Materials