Experimental Aspects of Using Time-Averaged Holographic Interferometry to Detect Barely Visible Impact Damage in a Graphite/Epoxy Composite Plate,

Abstract

Time-averaged holographic interferometry has been used to detect barely visible impact damage in a graphite/epoxy plate. Details are given of both the experimental and theoretical aspects of time-averaged holographic interferometry, including temporal modulation of the laser light. Double exposure holographic interferometry has also been used to detect barely visible impact damage.

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Document Details

Document Type
Technical Report
Publication Date
Aug 25, 1987
Accession Number
ADA194418

Entities

People

  • S. J. Rumble

Tags

Communities of Interest

  • Advanced Electronics

DTIC Thesaurus Topics

  • Amplifiers
  • Amplitude
  • Bessel Functions
  • Composite Materials
  • Dynamic Response
  • Epoxy Composites
  • Epoxy Laminates
  • Frequency
  • Graphitic Materials
  • Lasers
  • Materials
  • Phase Modulation
  • Photographic Plates
  • Photographs
  • Photography
  • Vibration
  • Waves

Fields of Study

  • Physics

Readers

  • Optical Physics and Photonics.
  • Structural Health Monitoring of Composite Structures.

Technology Areas

  • Directed Energy