A Laser Spectroscopy Technique for Evaluating In-situ Degradation of Composite Materials

Abstract

Advanced materials are being implemented in many Army systems. These systems require new non-destructive techniques for assessing in service degradation. Secondly, techniques are required to assess material integrity during manufacturing. IAP Research proposes a NDE technique based on Brillouin Scattering that is capable of determining changes in elastic constants of polymer based composite materials and composite materials. The change in elastic constants can then be used to predict component mechanical property degradation caused by thermal or low velocity compact damage. In the case of processing feed back the technique will allow for the in-situ evaluation of the effect of processing variables on mechanical properties.

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Document Details

Document Type
Technical Report
Publication Date
Sep 18, 1992
Accession Number
ADA256983

Entities

People

  • Bhanumathi Chelluri
  • Duane C. Newman

Tags

Communities of Interest

  • C4I
  • Energy and Power Technologies

DTIC Thesaurus Topics

  • Acoustic Properties
  • Advanced Materials
  • Bulk Modulus
  • Composite Materials
  • Crystal Structure
  • Elastic Properties
  • Electron Microscopy
  • Frequency Shift
  • Geometry
  • Laser Beams
  • Laser Spectroscopy
  • Lasers
  • Measurement
  • Mechanical Properties
  • Microscopy
  • Polymer Matrix Composites
  • Scanning Electron Microscopy

Fields of Study

  • Materials science

Readers

  • Computational Modeling and Simulation
  • Materials Science and Engineering.
  • Powder metallurgy of Titanium alloys.

Technology Areas

  • Directed Energy