Environment Effect on Fatigue of AerMet 100 Steel

Abstract

This study was conducted to identify the environment effect on the near-threshold fatigue crack growth in AerMet 100 steel at various load ratios (R = 0.05 - 0.9) and frequencies (0.1 - 10 Hz). The test environments were vacuum, gaseous dry nitrogen, distilled water, and four NaCl solutions of different concentrations. Three of them had an identical electrical conductivity. The test results were analyzed in terms of threshold stress intensity range delta K(th) and maximum stress intensity at threshold K(max).

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Document Details

Document Type
Technical Report
Publication Date
Jun 01, 2000
Accession Number
ADA378012

Entities

People

  • E. U. Lee
  • K. Sadananda
  • R. E. Ricker

Organizations

  • Naval Air Warfare Center

Tags

Communities of Interest

  • Air Platforms

DTIC Thesaurus Topics

  • Aerial Warfare
  • Aircrafts
  • Conductivity
  • Crack Tips
  • Cracks
  • Department Of Defense
  • Electrical Conductivity
  • Elements
  • Environment
  • Frequency
  • Information Operations
  • Intensity
  • Military Research
  • Nitrogen
  • Physical Properties
  • Standards

Readers

  • Materials Science (Mechanical Engineering).
  • Thermal Physics or Thermal Science.