Evaluation of Epoxy Composites Using Photoacoustic Fourier Transform Infrared Spectroscopy

Abstract

Fourier transform infrared spectroscopy (FT-IR) using a photoacoustic sampling cell has been used to obtain high quality infrared spectra of various fiber-reinforced epoxy composites and the corresponding resin matrixes. Photoacoustic spectroscopy (PAS) offers the advantages of having little or no sample preparation for high quality spectra to be obtained and no alignment of the infrared incident beam is necessary. This makes PAS an ideal sampling method for in-field testing of composite laminates. The spectra revealed information on the degree of cure of the resin system by monitoring the 915/cm absorption band and the type of reinforcement material used (glass or Kevlar).

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Document Details

Document Type
Technical Report
Publication Date
Jul 01, 1986
Accession Number
ADA172367

Entities

People

  • James M. Sloan

Tags

Communities of Interest

  • Advanced Electronics
  • Space
  • Weapons Technologies

DTIC Thesaurus Topics

  • Air Force
  • Composite Materials
  • Electromagnetic Radiation
  • Engineering
  • Epoxy Composites
  • Epoxy Laminates
  • Infrared Spectra
  • Infrared Spectroscopy
  • Laminates
  • Materials
  • Materials Laboratories
  • Materials Testing
  • Military Research
  • Resins
  • Spectra
  • Spectroscopy
  • Test Methods

Fields of Study

  • Materials science

Readers

  • Reinforced Composite Materials
  • Spectroscopy.