Exploratory Development of FMR (Ferromagnetic Resonance) Advanced Surface Flaw Detection Methods.

Abstract

The purpose of this program was to carry forward the development of a microwave eddy current (MEC) probe, which is based on the ferromagnetic resonance (FMR) principle, to the point where its performance in a practical flaw detection breadboard system for gas turbine engine component inspection and its compatibility with the Retirement-for-Cause (RFC) modular inspection system could be demonstrated. This program studied the physical constraints related to the inspection of complex geometries in Ti 6-2-4-6 and IN-100 materials with the MEC-FMR surface flaw detection method. Based on the resulting information, a breadboard inspection system was designed and fabricated to demonstrate the MEC-FMR test method in the inspection of a jet engine interstage seal key slot. Additional keywords: Fatigue cracks; Nondestructive inspection; Eddy currents.

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Document Details

Document Type
Technical Report
Publication Date
Apr 01, 1985
Accession Number
ADA157438

Entities

People

  • B. A. Auld
  • J. M. Prince

Tags

Communities of Interest

  • Advanced Electronics

DTIC Thesaurus Topics

  • Aeronautical Laboratories
  • Air Force
  • Contracts
  • Detection
  • Eddy Currents
  • Engine Components
  • Fabrication
  • Ferromagnetic Resonance
  • Frequency
  • Geometry
  • Jet Engines
  • Materials
  • Resonance
  • Resonant Frequency
  • Test And Evaluation
  • Test Methods
  • Turbines

Fields of Study

  • Physics

Readers

  • Materials Science and Engineering.
  • Software Engineering
  • Structural Health Monitoring of Composite Structures.