Investigation and Modeling of Damage Growth in Composite Laminates.

Abstract

Damage initiation and growth has been studied in several material systems and two notched geometries, revealing generic characteristics of damage development and its relationship to microstructure. Stress redistribution has been studied with photoelastic methods and simulated analytically. Adiabatic thermoelastic methods for strain field analysis under dynamic loading have been developed and the first micromechanical formulation of that problem has been achieved. A formulation of the singular stress problem in the boundary layer near a hole in composite laminates has been completed. And a brief study of the applicability of chaos theory to damage development representation was conducted. A critical element model of remaining strength and life of notched laminates has been constructed and validated.

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Document Details

Document Type
Technical Report
Publication Date
Sep 25, 1988
Accession Number
ADA207623

Entities

People

  • C. E. Bakis
  • Doron Shalev
  • H. R. Yih
  • K. L. Reifsnider
  • W. W. Stinchcomb

Organizations

  • Virginia Tech

Tags

Communities of Interest

  • Air Platforms
  • C4I
  • Energy and Power Technologies
  • Sensors

DTIC Thesaurus Topics

  • Air Force
  • Boundary Layer
  • Civil Engineering
  • Composite Materials
  • Computer Programs
  • Elastic Properties
  • Failure Mode And Effect Analysis
  • Geometry
  • Laminates
  • Materials
  • Materials Processing
  • Materials Science
  • Materials Testing
  • Measurement
  • Mechanical Working
  • Mechanics
  • Three Dimensional

Readers

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