Ultrasonic Stress Wave Characterization of Composite Materials.

Abstract

The work reported covers three simultaneous projects. The first project was concerned with (1) establishing the sensitivity of the acousto-ultrasonic method for evaluating subtle forms of damage development in cyclically loaded composite materials, (2) establishing the ability of the acousto-ultrasonic method for detecting initial material Imperfections that lead to localized damage growth and final specimen failure, and (3) characteristics of the NBS/Proctor sensor/receiver for acousto-ultrasonic evaluation of laminated composite materials. The second project was concerned with examining the nature of the wave propagation that occurs during acousto-ultrasonic evaluation of composite laminates and demonstrating the role of Lamb or plate wave modes and their utilization for characterizing composite laminates.

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Document Details

Document Type
Technical Report
Publication Date
May 01, 1986
Accession Number
ADA302008

Entities

People

  • Edmund G. Henneke Ii
  • John C. Duke Jr.
  • Wayne W. Stinchcomb

Organizations

  • Virginia Tech

Tags

DTIC Thesaurus Topics

  • Composite Materials
  • Laminates
  • Materials
  • Sensitivity
  • Stress Waves
  • Test And Evaluation
  • Wave Propagation
  • Waves

Readers

  • Structural Health Monitoring of Composite Structures.
  • Theoretical Analysis.