Determination of the Effect of Strain Rate on the Mechanical Properties of Graphite/Epoxy Laminates.

Abstract

The main objective of this program was to experimentally evaluate the effect of strain rate on graphite/epoxy laminates. Specimens representing four laminates ((O)24T, (+ or - 45)12S, (+ or - 45/02)3/90)S, and (+ or - 45/0/+ or - 45)2/+ or - 45/90)S) were statically tested in one of two environments, room temperature dry or elevated temperature wet (200 F, 1% moisture content) at strain rates in either tension or compression which yielded failure times of .1 sec, 1 sec, 10 sec, and 100 sec. Results indicate that the laminates are more strain rate sensitive under the elevated temperature wet environment and that laminates typical for Navy aircraft have a statistically significant strain rate effect only under the elevated temperature wet condition.

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Document Details

Document Type
Technical Report
Publication Date
May 01, 1983
Accession Number
ADA136334

Entities

People

  • J. M. Alper

Organizations

  • Naval Air Warfare Center Warminster

Tags

Communities of Interest

  • Air Platforms
  • Ground and Sea Platforms
  • Space

DTIC Thesaurus Topics

  • Aircrafts
  • Composite Materials
  • Environment
  • Epoxy Laminates
  • Failure Mode And Effect Analysis
  • Frequency
  • Governments
  • Graphitic Materials
  • Laminates
  • Materials
  • Materials Science
  • Materials Testing
  • Mechanical Properties
  • Mechanics
  • Moisture Content
  • Navy Aircraft
  • Strain Rate

Readers

  • Aerosol Science/Aerosol Physics
  • Structural Health Monitoring of Composite Structures.