'In Situ' Non-Destructive Testing of Aircraft Structures by Holographic Interferometry

Abstract

The report describes an investigation into a method of non- destructively testing part of an aircraft in situ. The method used was double- exposure holographic interferometry whereby two holograms of an object are recorded on the same holographic plate, the only difference being that the object is strained between exposures. The holograms were taken with a pulsed ruby laser and the stain applied by gentle heating. Results indicate that the technique could be successfully applied, for example, to a complete aircraft in a hanger.

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Document Details

Document Type
Technical Report
Publication Date
Feb 01, 1973
Accession Number
AD0771212

Entities

People

  • M. P. Wright

Organizations

  • Royal Aircraft Establishment

Tags

DTIC Thesaurus Topics

  • Aircrafts
  • Composite Structures
  • Continuous Waves
  • Emulsions
  • Holograms
  • Holography
  • Interferometry
  • Laser Beams
  • Lasers
  • Michelson Interferometers
  • Mirrors
  • Pulsed Lasers
  • Reflectors
  • Repetition Rate
  • Ruby Lasers
  • Solid State Lasers
  • Vibration

Fields of Study

  • Physics

Readers

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

Technology Areas

  • Directed Energy