The Analysis of Deformations and Strains in Composites by Moire Interferometry.

Abstract

Local deformation fields are exhibited for several composite members. Cases of severe shear strain gradients and local anomalies of material behavior are emphasized. Examples illustrated are from short beam tests, strain concentration analyses, multi ply panel tests and slotted metal-matrix tensile specimen tests. The experimental method, moire interferometry, yielded contour maps of in plane displacement fields with subwavelength sensitivity, high fringe contrast and high spatial resolution.

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Document Details

Document Type
Technical Report
Publication Date
Jul 01, 1987
Accession Number
ADA187482

Entities

People

  • Daniel Post

Organizations

  • Virginia Tech

Tags

Communities of Interest

  • Air Platforms

DTIC Thesaurus Topics

  • Composite Materials
  • Data Reduction
  • Displacement
  • Far Field
  • Frequency
  • Graphitic Materials
  • Gratings (Spectra)
  • Interferometry
  • Materials
  • Materials Laboratories
  • Materials Science
  • Measurement
  • Mechanics
  • Metal Matrix Composites
  • Micromechanics
  • Sensitivity
  • Sequences

Fields of Study

  • Physics

Readers

  • Mechanical Engineering/Mechanics of Materials.
  • Optical Physics and Photonics.
  • Structural Health Monitoring of Composite Structures.