NONDESTRUCTIVE EVALUATION OF METAL FATIGUE.

Abstract

A nondestructive testing device was developed to monitor the progress of fatigue growth in a rod type fatigue specimen stress cycled in direct tension. The technique developed was that of using a Hall-effect element to monitor the per turbations in the magnetic field at the surface of the specimen when the specimen was magnetized. Both longitudinal and radial flux orientations in the specimen are possible with the system developed under this contract. Typical inspection records taken with longitudinal flux orientation are presented. Preliminary tests were made to determine the repeatability and sensitivity of the system. (Author)

Document Details

Document Type
Technical Report
Publication Date
Mar 29, 1963
Accession Number
AD0411481

Entities

People

  • Felix Kusenberger
  • J.w. Fogwell
  • W.lyle Donaldson

Organizations

  • Southwest Research Institute

Tags

DTIC Thesaurus Topics

  • Contracts
  • Hall Effect
  • Inspection
  • Magnetic Fields
  • Nondestructive Testing
  • Orientation (Direction)
  • Sensitivity
  • Test And Evaluation

Readers

  • Aerospace Test and Evaluation
  • Plasma Physics / Magnetohydrodynamics
  • Structural Health Monitoring of Composite Structures.