The Mechanics of Near Surface Inclusions and Their Effect on Fatigue Life.

Abstract

This program was designed to focus efforts in analytical mechanics and physical metallurgy, interactively, to learn more about the way in which inclusions catalyze the crack initiation process. The analytical mechanics effort was aimed at calculating strain distributions surrounding (a) hemispherical surface inclusions and (b) spherical near-surface inclusions in a half-space subjected to arbitrary tractions. The metallurgical work addressed the problem of describing the initiation process through replica microscopy techniques applied to fatigue cycled specimens.

Document Details

Document Type
Technical Report
Publication Date
Dec 31, 1975
Accession Number
ADA020133

Entities

People

  • Philip H. Francis

Organizations

  • Southwest Research Institute

Tags

Communities of Interest

  • Materials and Manufacturing Processes

DTIC Thesaurus Topics

  • Chemistry
  • Fatigue Life
  • Inclusions
  • Materials Science
  • Mechanical Properties
  • Mechanics
  • Metallurgy
  • Microscopy
  • Physical Metallurgy
  • Physics
  • Traction

Readers

  • Fluid Dynamics.
  • Mechanical Engineering/Mechanics of Materials.
  • Metallurgy

Technology Areas

  • Space