Rayleigh Reflections and Nonlinear Acoustics of Solids.

Abstract

Part I. Schlieren Studies of Ultrasonic Waves, and Part II. Nonlinear Acoustics of Solids. Part I. The report begins with the description of a unique goniometer for use in a schlieren system for visualization of ultrasonic waves in liquids. By using the properties of parallelograms we were able to produce a precision goniometer without use of precision machine shop facilities. The goniometer is used to obtain schlieren photographs of leaky Rayleigh waves excited on an Al2O3 layer on a stainless steel reflector immersed in water, showing that the Rayleigh wave velocity in this case is less than that of either a water-Al2O3 layer or a water-stainless steel layer. Part II. Four subjects are covered: (1) the Nonlinearity Parameters and Third-Order Elastic Constants of Copper between 300 and 3 K; (2) Measurement of Nonlinearity Parameters in Small Solid Samples by the Harmonic Generation Technique; (3) Relationship between Solid Nonlinearity Parameters and Thermodynamic Gruneisen Parameters; and (4) Quantum Mechanical Theory of Nonlinear Interaction of Ultrasonic Waves.

Open PDF

Document Details

Document Type
Technical Report
Publication Date
Oct 01, 1980
Accession Number
ADA092603

Entities

People

  • M. A. Breazeale

Organizations

  • University of Tennessee

Tags

Communities of Interest

  • Biomedical
  • Energy and Power Technologies
  • Weapons Technologies

DTIC Thesaurus Topics

  • Acoustics
  • Crystal Structure
  • Diffraction
  • Doppler Effect
  • Equations
  • Frequency
  • Low Temperature
  • Materials
  • Measurement
  • Military Research
  • Optical Materials
  • Phase Velocity
  • Shape
  • Standing Waves
  • Ultrasounds
  • Wave Equations
  • Wave Propagation

Fields of Study

  • Physics

Readers

  • Atmospheric Science / Meteorology, specifically Wind Wave Turbulence.
  • Combustion and Flow Dynamics.
  • Materials Science and Engineering.

Technology Areas

  • Quantum Computing