Benefits of Overload for Fatigue Cracking at a Notch

Abstract

Tests are described which measure the effect of compression overload on fatigue crack initiation and growth from a 0.1 mm radius notch in alloy steel KIc specimens. Other tests are described which measure the effect of tension overload on fatigue crack initiation and growth from a 3.4 mm root radius notch in similar specimens. The effect of overload on the number of cycles required for crack growth is described for both types of tests in relation to a residual stress model.

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Document Details

Document Type
Technical Report
Publication Date
May 01, 1980
Accession Number
ADA090698

Entities

People

  • J. A. Kapp
  • John H. Underwood

Organizations

  • United States Army Armament Research, Development and Engineering Center

Tags

Communities of Interest

  • Weapons Technologies

DTIC Thesaurus Topics

  • Engineering
  • Fatigue Cracking
  • Fatigue Life
  • Fracture (Mechanics)
  • Geometry
  • Materials
  • Measurement
  • Mechanical Properties
  • Mechanics
  • Residual Stress
  • Statistical Analysis
  • Stresses
  • Tensile Stress
  • Toughness
  • Weapon Systems
  • Weapons
  • Yield Strength

Fields of Study

  • Materials science

Readers

  • Materials Science (Mechanical Engineering).