Interlaminar Crack Growth in Fiber Reinforced Composites During Fatigue. Part 3.

Abstract

Interlaminar crack growth behavior in fiber-reinforced composites subjected to fatigue loading was investigated experimentally and theoretically. In the experimental phase of the study, interlaminar crack propagation rates and mechanisms were detertnined for the cases of various geometrles. laminate parameters and cyclic stress levels. An advanced singular hybrid-stress finite element method was used in conjunction with the experimental results to examine the local crack-tip behavior and to characterize the crack propagation during fatigue. Results elucidate the basic nature of the cyclic delamination damage, and relate the interlaminar crack growth rate to the range of mixed-mode crack-tip stress intensity factors. The results show that crack growth rates to be related directly to the range of the mixed-node cyclic stress intensity factors by a power law relationship. (MM)

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Document Details

Document Type
Technical Report
Publication Date
Feb 01, 1981
Accession Number
ADA302676

Entities

People

  • H. T. Wang
  • S. S. Wang

Organizations

  • University of Illinois Urbana–Champaign

Tags

Communities of Interest

  • Air Platforms
  • Energy and Power Technologies
  • Space
  • Weapons Technologies

DTIC Thesaurus Topics

  • Aeronautics
  • Applied Mechanics
  • Composite Materials
  • Epoxy Composites
  • Failure Mode And Effect Analysis
  • Fatigue Tests (Mechanics)
  • Fiber Reinforced Composites
  • Finite Element Analysis
  • Jet Propulsion
  • Laminates
  • Manufacturing
  • Materials
  • Materials Laboratories
  • Materials Processing
  • Materials Testing
  • Mechanics
  • Navy

Fields of Study

  • Materials science

Readers

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