Residual Strength Degradation Model and Theory of Periodic Proof Tests for Graphite/Epoxy Laminates.

Abstract

A fatigue residual strength degradation model has been derived based on the assumption that the residual strength decreases monotonically. The model is verified experimentally by use of Gr/E unnotched laminates under constant amplitude fatigue. The theory of periodic proof tests and reliability prediction for composites have been established. Experimental data for specimens under periodic proof tests and fatigue loading have been generated. It is shown that the correlation between the experimental results and the theory of periodic proof tests is outstanding. (Author)

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Document Details

Document Type
Technical Report
Publication Date
Nov 15, 1976
Accession Number
ADA040077

Entities

People

  • Jann N. Yang
  • M. D. Liu

Organizations

  • Virginia Tech

Tags

Communities of Interest

  • Counter IED
  • Energy and Power Technologies

DTIC Thesaurus Topics

  • Aeronautical Laboratories
  • Air Force
  • Composite Materials
  • Distribution Functions
  • Epoxy Laminates
  • Experimental Data
  • Fatigue Life
  • Fatigue Tests (Mechanics)
  • Ions
  • Laminates
  • Materials
  • Materials Laboratories
  • Materials Testing
  • Mechanics
  • Probability
  • Random Variables
  • Statistical Distributions

Readers

  • Artificial Intelligence
  • Materials Science (Mechanical Engineering).
  • Reinforced Composite Materials