FATIGUE TEST RESULTS AND ANALYSIS OF 11 PISTON PROVOST WINGS TO DETERMINE THE EFFECT OF ORDER OF PROGRAMMED LOAD,

Abstract

Fatigue results of 11 wings programme-loaded in ascending order were compared with 41 wings tested in descending order. Results indicate a substantial reduction in the log mean life when testing in ascending order but negligible difference in variance. Comparison of these results with results from two other studies indicates that the magnitude of peak stress and shape of the spectrum applied, very much influences whether descending or ascending order of load gives the longer endurance. (Author)

Document Details

Document Type
Technical Report
Publication Date
Jan 01, 1968
Accession Number
AD0669414

Entities

People

  • H. E. Parish

Tags

DTIC Thesaurus Topics

  • Diffraction
  • Fatigue Tests (Mechanics)
  • Materials Testing
  • Spectra

Fields of Study

  • Psychology

Readers

  • Aerodynamics/Aeronautics.
  • Regression Analysis.
  • Structural Health Monitoring of Composite Structures.