Fatigue Behavior and Life Prediction of Composite Laminates.

Abstract

This report presents a survey of some of the available data on the effects of fatigue in composite laminates. Both static and fatigue behaviors of unidirectional laminae are discussed in terms of the static failure and fatigue limit strains of the constituents as well as of the loading conditions. Subcritical failure modes in multidirectional laminates are delineated and correlated with the material responses such as temperature increase, modulus change, and fatigue notch insensitivity. Also included are the effects of test frequency and compression. Methods of predicting the fatigue strengths of off-axis laminae and of angle-ply laminates are summarized. Finally, two statistical life prediction models are discussed using the material 'age'. (Author)

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Document Details

Document Type
Technical Report
Publication Date
Apr 01, 1978
Accession Number
ADA060548

Entities

People

  • H. Thomas Hahn

Organizations

  • Air Force Research Laboratory

Tags

Communities of Interest

  • Air Platforms
  • Energy and Power Technologies

DTIC Thesaurus Topics

  • Composite Material Fabrication
  • Composite Materials
  • Failure Mode And Effect Analysis
  • Fiber Reinforced Polymers
  • Laminates
  • Materials Laboratories
  • Materials Processing
  • Materials Science
  • Materials Testing
  • Mechanical Working
  • Mechanics
  • Metal Matrix Composites
  • Micromechanics
  • Reinforced Plastics
  • Stress Strain Relations
  • Tensile Strength

Fields of Study

  • Materials science

Readers

  • Structural Health Monitoring of Composite Structures.