Non-Destructive Method for Environmental Breakdown of Graphite Fiber Reinforced Polymer Composites

Abstract

Studies were made to determine if moisture ingress down the fiber/ epoxy interface could be detected as an increase in the double layer capacitance c(d1). To do this, the specific double layer capacitance C(sp). Individual unsized fibers were electrically contacted to the end of a wire enclosed in a glass pipette support frame. The free end of this fiber was then secured to the end of the pipette with paraffin and D(d1) measurements were made employing an Electrochemical Impedance technique. By measuring the exposed area of each fiber tested, the C(sp) could then be calculated.

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Document Details

Document Type
Technical Report
Publication Date
Dec 31, 1989
Accession Number
ADA223729

Entities

People

  • George L. Cahen Jr.
  • Glenn E. Stoner
  • Leland Melvin
  • S. R. Taylor
  • Thomas P. Mangiacapre

Organizations

  • University of Virginia

Tags

Communities of Interest

  • Advanced Electronics

DTIC Thesaurus Topics

  • Alkanes
  • Capacitance
  • Composite Materials
  • Computer Programs
  • Epoxy Composites
  • Fiber Reinforced Polymers
  • Geometry
  • Graphitic Materials
  • Impedance
  • Materials
  • Materials Science
  • Measurement
  • Military Research
  • Moisture
  • Polymer Matrix Composites
  • Polymers
  • Universities

Readers

  • Microwave Engineering.
  • Reinforced Composite Materials
  • Surface Coatings Technology.