Visualization of Impact Damage of Composite Plates by Means of the Moire Technique.

Abstract

The results of a program to determine the phenomenological aspects of the propagation damage due to low velocity impact on heavily loaded graphite-epoxy composite laminates are described. The main tool of this investigation is high speed photography coupled with the moire fringe technique. High speed moire' motion records of the impacted specimens are presented. The test results provide information on the time scale and sequence of the failure process. While the generation of the initial damage cannot always be separated temporally from the spreading of the damage, the latter takes place on the average with a speed on the order of 200 m/sec. (MM)

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Document Details

Document Type
Technical Report
Publication Date
Apr 01, 1980
Accession Number
ADA302695

Entities

People

  • C. D. Babcock
  • H. Chai
  • W. G. Knauss

Organizations

  • California Institute of Technology

Tags

Communities of Interest

  • Weapons Technologies

DTIC Thesaurus Topics

  • Cameras
  • Composite Materials
  • Compression
  • Delamination
  • Epoxy Composites
  • Epoxy Laminates
  • Failure Mode And Effect Analysis
  • Geometry
  • High Speed Photography
  • Impact Point
  • Laminates
  • Light Sources
  • Materials
  • Mechanics
  • Photographs
  • Photography
  • Vibration

Fields of Study

  • Physics

Readers

  • Combustion and Flow Dynamics.
  • Structural Health Monitoring of Composite Structures.