Dynamic Behavior of Fiber and Particle Reinforced Composites.

Abstract

Full anisotropic behavior of fiber reinforced composites has been studied. Comparison of model predictions with available experiments shows excellent agreement. This also allows the determination of anisotropic fiber properties in an inverse fashion. We have also studied the frequency dependence of phase velocities and attenuation in a particle reinforced composite allowing for the effect of non-perfect interfaces. Simultaneously we have examined ultrasonic scattering by surface-breaking cracks. In particular, we have studied the effect of crack branches on the ultrasonic signal. Scattering of ultrasonic SH waves by buried canted cracks in a thick plate has also been investigated. Here the results of calculations show excellent agreement with available experiments.

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Document Details

Document Type
Technical Report
Publication Date
Apr 28, 1987
Accession Number
ADA180204

Entities

People

  • Subhendu K. Datta

Organizations

  • University of Colorado Boulder

Tags

Communities of Interest

  • Air Platforms

DTIC Thesaurus Topics

  • Acoustic Waves
  • Agreements
  • Air Force
  • Attenuation
  • Composite Materials
  • Dispersions
  • Elastic Waves
  • Fiber Reinforced Composites
  • Frequency
  • Graphitic Materials
  • Materials
  • Mechanical Engineering
  • Mechanical Properties
  • Mechanics
  • Phase Velocity
  • Scattering
  • Wave Propagation

Fields of Study

  • Materials science

Readers

  • Electromagnetic Wave Scattering and Antenna Radiation Engineering
  • Structural Health Monitoring of Composite Structures.