VIBRATION ANALYSIS OF HOLOGRAPHIC AND CONVENTIONAL INTERFEROMETRY.

Abstract

Describes two relatively new and useful optical techniques for measuring deformation of surfaces. Verifies results of holographic vibration analysis by comparison of results obtained with modified Twyman-Green interferometer. The hologram has the advantage of providing contour map of vibration amplitude of entire surface for particular frequency and drive, whereas more conventional techniques can be used to investigate only one point on surface at a time. Neither method requires attachment of sensors to surface being measured, and both may be applied to surfaces submerged in transparent liquids. (Author)

Document Details

Document Type
Technical Report
Publication Date
Sep 08, 1967
Accession Number
AD0663271

Entities

People

  • K. Bromley
  • M. A. Monahan

Tags

DTIC Thesaurus Topics

  • Amplitude
  • Attachment
  • Doppler Effect
  • Frequency
  • Frequency Shift
  • Holograms
  • Interferometers
  • Interferometry
  • Vibration

Fields of Study

  • Physics

Readers

  • Electromagnetic Wave Scattering and Antenna Radiation Engineering
  • Optical Physics and Photonics.