Analysis of Barkhausen Noise to Assess Shrink Fit Stresses.

Abstract

The possible application of Barkhausen Noise Analysis to assess shrink fit stresses in steel bushings was investigated. Ten specimens of four different size NAS steel bushings were used in experiments to determine the relationship between the Barkhausen signal amplitude and the hoop-stress in the bushings. This relationship was investigated for specimens which were loaded by a simple clamping fixture and specimens subjected to actual thermal interference fits. The results show that while the relationship of Barkhausen signal amplitude to hoop stress is predictable for specimens loaded by the simple clamping fixture, the relationship was less predictable for actual thermal fit bushings. The variation in results could possibly be due to variable levels of axial stress produced by the differential thermal expansion of the steel and aluminum. (Author)

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Document Details

Document Type
Technical Report
Publication Date
Feb 01, 1981
Accession Number
ADA128732

Entities

People

  • John R. Barton
  • W. D. Perry

Organizations

  • Southwest Research Institute

Tags

Communities of Interest

  • Air Platforms
  • Space

DTIC Thesaurus Topics

  • Aircraft Equipment
  • Aircrafts
  • Aluminum
  • Amplitude
  • Army Personnel
  • Assembly
  • Calibration
  • Computer Programs
  • Data Sets
  • Gages
  • Materials
  • Mathematical Analysis
  • Measurement
  • Radial Stress
  • Residual Stress
  • Strain Gages
  • Stresses

Readers

  • Structural Dynamics.
  • Structural Health Monitoring of Composite Structures.