STUDY IN THE USE OF STRUCTURAL MODELS FOR SONIC FATIGUE

Abstract

The feasibility of employing reduced scale structural models for sonic fatigue testing were examined theoretically and experimentally. Scaling laws for structure and for jet noise sources were presented and theoretical fatigue aspects discussed. Application of the theory to simple flight vehicle type structure was then investigated. Twenty-five panel specimens in three scales and 18 fatigue coupons in two scales were tested to failure with proportionately scaled forcing functions. The results indicate that an empirical relationship between scale factor and fatigue life exists, and that fatigue modeling techniques are feasible and practical. (Author)

Document Details

Document Type
Technical Report
Publication Date
Apr 01, 1962
Accession Number
AD0277186

Entities

People

  • Cory L. Gray

Tags

DTIC Thesaurus Topics

  • Fatigue (Mechanics)
  • Fatigue Life
  • Mechanical Properties
  • Scaling Laws
  • Sonic Fatigue

Readers

  • Fluid Mechanics and Fluid Dynamics.
  • Theoretical Analysis.
  • Tribology (the study of the boundary interaction between sliding surfaces, lubrication, wear and friction).