Interactions of Ultrasonic Waves with Composite Plates

Abstract

We present a unified analytical treatment of the interaction of ultrasonic waves with single and multilayered arbitrarily oriented anisotropic elastic plates. The individual components forming the plate are allowed to possess up to as low as monoclinic symmetry. The plates are assumed to be immersed in a fluid and subjected to incident acoustic waves at arbitrary angles from the normal as well as at arbitrary azimuthal angles. Reflection and transmission coefficients are derived from which all propagation characteristics are identified. Highly complex reflection behavior, expressed as phase velocity- frequency dispersion, is observed as a consequence of anisotropy. Extensive comparisons with the concurrently acquired experimental data by Chimenti at the AFWAL on a variety of composite samples have been of unique help in assessing the validity of our theoretical modeling, and its potential application in the nondestructive evaluation of materials. Keywords: Fiber reinforced composites.

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Document Details

Document Type
Technical Report
Publication Date
Mar 24, 1989
Accession Number
ADA206991

Entities

People

  • Adnan H. Nayfeh

Organizations

  • University of Cincinnati

Tags

Communities of Interest

  • Air Platforms

DTIC Thesaurus Topics

  • Acoustic Waves
  • Air Force
  • Composite Materials
  • Coordinate Systems
  • Elastic Waves
  • Equations
  • Experimental Data
  • Fiber Reinforced Composites
  • Frequency
  • Materials Processing
  • Mechanical Properties
  • Mechanics
  • Orientation (Direction)
  • Phase Velocity
  • Reflection
  • Ultrasounds
  • Wave Propagation

Readers

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