Nondestructive Testing Using TRW Acousto-Optical Imaging System

Abstract

The technique of Acousto-Optical Imaging (AOI) enables one to 'see', on a real-time basis, within optically opaque materials and to detect internal or surface flaws and/or other irregularities which might be present. The process uses an ultrasonic beam to probe the object under study. As it interacts with the object, the ultrasonic beam acquires an acoustical 'picture' of the object. The acoustic waves then interact with a monochromatic light beam (as from a laser). Optical sidebands are produced by the Bragg diffraction of light. The cumulative result of this process is that these sidebands produce a visual image of the interior of the object. The report discusses the results of an analytical and experimental study to evaluate the applicability of acousto- optical imaging to nondestructive testing.

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Document Details

Document Type
Technical Report
Publication Date
Aug 01, 1971
Accession Number
AD0738564

Entities

People

  • Jerold L. Jacoby
  • Pravin G. Bhuta
  • Robert Aprahamian

Tags

Communities of Interest

  • Air Platforms
  • Space

DTIC Thesaurus Topics

  • Acoustic Frequencies
  • Acoustic Waves
  • Acoustics
  • Cameras
  • Composite Materials
  • Diffraction
  • Geometry
  • Light Sources
  • Materials Laboratories
  • Materials Processing
  • Measurement
  • Optical Images
  • Optics
  • Photographs
  • Refractive Index
  • Surface Roughness
  • Transducers

Fields of Study

  • Physics

Readers

  • Image Processing and Computer Vision.
  • Optical Physics and Photonics.
  • Systems Analysis and Design

Technology Areas

  • Directed Energy