STUDIES OF FATIGUE UNDER SINUSOIDAL AND RANDOM LOADING CONDITIONS.

Abstract

A program involving age hardening aluminum alloy L73 was undertaken to evaluate the response of this material to sinusoidal and random loading. The random stress pattern applied was derived from a resonance system, and the distribution of stresses conformed to a Rayleigh distribution of peaks at a narrow band frequency around 90 cycles per second. A discontinuity was observed in the sinusoidal S/N curves of the material associated with a change in fracture characteristics. The random loading results showed that the discontinuity was an important factor in the formulation of fatigue prediction theory. The results of testing mild steel under sinusoidal conditions are also presented. (Author)

Document Details

Document Type
Technical Report
Publication Date
Jun 01, 1968
Accession Number
AD0675188

Entities

People

  • C. J. Tayler
  • T. R. G. Williams

Organizations

  • University of Southampton

Tags

DTIC Thesaurus Topics

  • Age Hardening
  • Alloys
  • Aluminum
  • Aluminum Alloys
  • Discontinuities
  • Frequency
  • Hardening
  • Materials
  • Resonance
  • Resonant Frequency

Readers

  • Atmospheric Science / Meteorology, specifically Wind Wave Turbulence.
  • Structural Health Monitoring of Composite Structures.