Pulsed THZ Interrogation of Sofi With Knit Lines in 2D

Abstract

This paper examines the scattering effect of knit lines and voids in SOFI through simulations of THz interrogation at normal and non-normal angles of incidence and using focused and non-focused single-cycle plane waves. We model the electromagnetic field using the TE mode of the 2D Maxwell's equations reduced to a wave equation, which are then solved with a finite-element time-domain method. The knit lines are modeled by changing the dielectric constant.

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Document Details

Document Type
Technical Report
Publication Date
Jan 01, 2006
Accession Number
ADA455688

Entities

People

  • H. Thomas Banks
  • N. L. Gibson
  • W. P. Winfree

Organizations

  • North Carolina State University

Tags

Communities of Interest

  • Air Platforms

DTIC Thesaurus Topics

  • Air Force
  • Angle Of Incidence
  • Composite Materials
  • Dielectric Permittivity
  • Dielectric Properties
  • Frequency
  • Low Density
  • Materials
  • Plane Waves
  • Refractive Index
  • Scattering
  • Signal Processing
  • Simulations
  • Terahertz Radiation
  • Two Dimensional
  • Wave Propagation
  • Waves

Readers

  • Electromagnetic Wave Scattering and Antenna Radiation Engineering
  • Materials Science.