Experimental Investigation of the Interaction of Moisture, Low Temperature, and Low Level Impact on Graphite/Epoxy Composites-II.

Abstract

The type of damage investigated in this program included; (a) that which is produced by low speed impact of a blunt object, such as an accidentally dropped hand tool; (b) severe delamination produced by residual strength testing of an impact damaged specimen; and (c) delamination produced by placing release film between two plies during fabrication. Specimens containing (a) and (b) type of damage were used in the first phase to experimentally determine: Amount of damage produced by the freeze-thaw cycle in representative impact damaged specimens; Amount of water picked up in the liquid state by the ruptured and delaminated regions of typical impact-damaged specimens; and Whether water migrates into and out of damaged regions during freeze-thaw cycling.

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Document Details

Document Type
Technical Report
Publication Date
Oct 01, 1982
Accession Number
ADA145372

Entities

People

  • K. N. Lauraitis
  • P. E. Sandorff

Organizations

  • Lockheed Martin

Tags

Communities of Interest

  • Air Platforms
  • Weapons Technologies

DTIC Thesaurus Topics

  • Aircrafts
  • Composite Materials
  • Crack Tips
  • Delamination
  • Fabrication
  • Graphitic Materials
  • Instrumentation
  • Laminates
  • Low Temperature
  • Materials Laboratories
  • Materials Processing
  • Mechanical Properties
  • Mechanics
  • Physical Properties
  • Plastic Explosives
  • Stresses
  • Test Sets

Readers

  • Structural Health Monitoring of Composite Structures.
  • Thermal Physics or Thermal Science.