Analysis of Edge Impact Stresses in Composite Plates.

Abstract

The in-plane edge impact of composite plates, with or without a protection strip, is investigated in this work. A computational analysis based on the Fast Fourier Transform technique is presented. The particular application of the present method is in the understanding of the foreign object damage problem of composite fan blades. However, the method is completely general and may he applied to the study of other stress wave propagation problems in a half space. Results indicate that for the protective strip to be effective in reducing impact stresses in the composite the thickness must be equal or greater than the impact contact dimension. Also large interface shear stresses at the strip - composite boundary can be induced under impact. (MM)

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Document Details

Document Type
Technical Report
Publication Date
Jul 01, 1974
Accession Number
ADA304623

Entities

People

  • C. K. Kang
  • F. C. Moon

Organizations

  • Princeton University

Tags

Communities of Interest

  • Air Platforms
  • C4I
  • Space

DTIC Thesaurus Topics

  • Boundaries
  • Composite Materials
  • Computational Science
  • Computer Programs
  • Computer Simulations
  • Computers
  • Fan Blades
  • Fast Fourier Transforms
  • Graphitic Materials
  • Materials
  • Mechanics
  • Shear Stresses
  • Stress Waves
  • Stresses
  • Two Dimensional
  • Wave Propagation
  • Waves

Readers

  • Structural Dynamics.
  • Structural Health Monitoring of Composite Structures.

Technology Areas

  • Space