Microbial Degradation at Stressed Fiber Reinforced Polymeric Composites.

Abstract

Reduction of tensile strength was demonstrated for carbon fiber reinforced epoxy resin composite strips after exposure to sulfate-reducing bacteria (SRB) in batch culture. Composite strips were maintained in a stressed condition in 3- and 4-point bend fixtures before and during exposure. Exposed surfaces were examined microscopically for bacterial colonization, fiber disruption and disbonding. Mechanical testing and acoustic emission (AE) examinations were used to evaluate degradation of tensile strength.

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Document Details

Document Type
Technical Report
Publication Date
Jan 01, 1995
Accession Number
ADA298243

Entities

People

  • Brenda J. Little
  • Kevin Hart
  • Patricia Wagner
  • Richard D Ray
  • Walter Bradley

Tags

Communities of Interest

  • Energy and Power Technologies

DTIC Thesaurus Topics

  • Acoustic Emissions
  • Advanced Materials
  • Carbon Fibers
  • Composite Materials
  • Engineering
  • Failure Mode And Effect Analysis
  • Graphitic Materials
  • Material Degradation Processes
  • Materials
  • Materials Engineering
  • Materials Laboratories
  • Materials Science
  • Materials Testing
  • Mechanical Engineering
  • Military Research
  • Polymer Matrix Composites
  • Tensile Strength

Fields of Study

  • Materials science

Readers

  • Materials Science and Engineering.
  • Structural Health Monitoring of Composite Structures.
  • Surface Coatings Technology.

Technology Areas

  • Biotechnology
  • Biotechnology - Bioremediation