Development of Capabilities of Optical Diffraction Analysis for Quantitatively Comparing and Correlating Rock Fabrics and Fabric Changes

Abstract

Photographs and acetate peels of rock specimens undergoing deformation have been converted to their two-dimensional Fourier amplitude transforms by optical diffraction. Changes in the transforms reflect spatial changes in the rock fabrics. Maps of the transforms assist in their interpretation. Transforms have also been produced using partially coherent light and a modified miscroscope system. Suites of spatial filters produced from theoretical considerations and modified transforms have been constructed for differential analysis of the spatial frequency content of input photographs. Holographic subtraction of one test input from another has been started, laying the foundation for another approach to mapping fabric changes in progressive deformation.

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Document Details

Document Type
Technical Report
Publication Date
Feb 10, 1972
Accession Number
AD0737390

Entities

People

  • Howard J. Pincus

Organizations

  • University of Wisconsin–Milwaukee

Tags

Communities of Interest

  • Air Platforms
  • Energy and Power Technologies
  • Space

DTIC Thesaurus Topics

  • Cameras
  • Crystal Structure
  • Diffraction
  • Diffraction Analysis
  • Light Sources
  • Measurement
  • Microscopes
  • Optical Analysis
  • Optical Processing
  • Optics
  • Photographic Equipment
  • Photographic Materials
  • Photographs
  • Photography
  • Rock Mechanics
  • Standards
  • Two Dimensional

Fields of Study

  • Physics

Readers

  • Calculus or Mathematical Analysis
  • Geotechnical Engineering.
  • Optical Physics and Photonics.