FATIGUE OF ALLOYS AT HIGH TEMPERATURES IN STATISTICAL ASPECT,

Abstract

Investigations were made into the characteristics of the statistical distribution of the fatigue properties and their parameters; the relation of these parameters to the stress level, temperature, and asymmetry of the cycle; the statistical evaluation of fatigue resistance during unsteady state loading; and calculations for strength. The role filled by technological factors during statistical evaluations of mechanical properties is indicated. During observations of the appropriate level of treatment it was found that the differences in the fatigue life for parts of machines were less than for test samples made of the same material. Use in the computations of the mechanical characteristics with their statistical evaluation by means of test samples adds to the safety margin for strength when making calculations for the given probability of survival. (Author)

Document Details

Document Type
Technical Report
Publication Date
Nov 04, 1968
Accession Number
AD0686087

Entities

People

  • L. A. Kozlov
  • S. V. Serensen

Organizations

  • National Air and Space Intelligence Center

Tags

DTIC Thesaurus Topics

  • Asymmetry
  • Computations
  • Fatigue Life
  • High Temperature
  • Materials
  • Mathematics
  • Mechanical Properties
  • Observation
  • Physical Properties
  • Probability
  • Resistance
  • Statistical Distributions
  • Survival
  • Test And Evaluation
  • Thermostability

Readers

  • Regression Analysis.
  • Structural Health Monitoring of Composite Structures.