Device for Inspection of Materials by Eddy Current Methods.

Abstract

With the growing application of filament-wound conductive fiber reinforced composites, particularly in aerospace, there is an increasing demand for nondestructive methods to detect and measure fiber anomalies such as service-incurred broken fibers and fabrication-related variations in fiber volume fraction or fiber density. Eddy current technology is ideally suited to these tasks since it is the conductive fibers which carry most of the current (carbon-carbons) or all of the current (graphite epoxies). Eddy current transducers may be used alone or in various combinations. A particular transducer may be both the transmitter and the receiver if the transducer is operating in the reflection mode. Patent applications. (JES)

Document Details

Document Type
Technical Report
Publication Date
Jun 30, 1989
Accession Number
ADD014205

Entities

People

  • Stephen S. Lane
  • Susan N. Vernon

Organizations

  • United States Department of the Navy

Tags

DTIC Thesaurus Topics

  • Carbon Carbon Composites
  • Composite Material Fabrication
  • Composite Materials
  • Eddy Currents
  • Fabrication
  • Fiber Reinforced Composites
  • Fibers
  • Graphitic Materials
  • Material Forming Processes
  • Materials
  • Materials Processing
  • Patent Applications
  • Reinforced Plastics
  • Transducers

Readers

  • Structural Health Monitoring of Composite Structures.
  • Systems Analysis and Design

Technology Areas

  • Space
  • Space - Hall-Effect Thruster