Acoustical Interferometry.

Abstract

Real-time acoustical interferometry is one of the most promising techniques in experimental mechanics. Engineers need stress and strain information both on the surface of an object as well as the interior to locate critical points (points of highest stress) for structural evaluation of any design. Acoustic waves have the potential to give this information. They are nondestructive, do not alter the performance of what is being examined, and carry information about every point in an object. No other technique has such a broad range of possibilities as does acoustic interferometry. Presently, acoustic waves are helpful in locating flaws and cracks in objects being tested, but it also has the potential of gathering and signaling information related to strain (or stress) at critical points. This report documents work in acoustical interferometry. Theory and experimental examples are presented to illustrate the technique.

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Document Details

Document Type
Technical Report
Publication Date
Mar 01, 1981
Accession Number
ADA126673

Entities

People

  • Weldon F. Swinson

Organizations

  • United States Army Aviation and Missile Command

Tags

Communities of Interest

  • Weapons Technologies

DTIC Thesaurus Topics

  • Acoustic Frequencies
  • Acoustic Holography
  • Acoustic Images
  • Acoustic Signals
  • Acoustic Waves
  • Air Force
  • Diffraction
  • Engineering
  • Films
  • Focal Planes
  • Frequency
  • Holography
  • Information Processing
  • Jet Propulsion
  • Military Research
  • Test And Evaluation
  • Waves

Fields of Study

  • Physics

Readers

  • Acoustical Oceanography.
  • Mechanical Engineering/Mechanics of Materials.
  • Systems Analysis and Design