A Synthesis of Crack Growth Theories in Fatigue into Some Statistical Distributions of Fatigue Life

Abstract

The proposed model for fatigue life is a synthesis of the distributional properties of three separate phases of fatigue crack growth. The convolved distribution of life contains three estimable parameters and a function disposable within a restricted class. The problem of estimating all three parameters using the method of maximum likelihood is examined and shown to be impossible of solution in certain cases. This indicates that one of the parameters must be determined a priori from concepts of strength of materials or fracture mechanics.

Open PDF

Document Details

Document Type
Technical Report
Publication Date
Jun 01, 1975
Accession Number
ADA014394

Entities

People

  • Sam C. Saunders

Organizations

  • Washington State University

Tags

Communities of Interest

  • Space

DTIC Thesaurus Topics

  • Applied Mathematics
  • Differential Equations
  • Equations
  • Estimators
  • Fatigue Life
  • Fracture (Mechanics)
  • Materials
  • Mathematical Models
  • Mechanics
  • Models
  • Normal Distribution
  • Probability
  • Random Variables
  • Statistical Distributions
  • Stochastic Processes
  • Structural Components
  • Two Dimensional

Readers

  • Calculus or Mathematical Analysis
  • Powder metallurgy of Titanium alloys.
  • Regression Analysis.