INVESTIGATION OF THE BASIC MECHANISM OF METAL FATIGUE

Abstract

Improved methods were devised for electrochemical cutting and chemical polishing of single crystal copper test specimens. The mechanical loading system designed for the cyclic deformation of single crystals was calibrated and the reliability of strain measurements was determined. Measurements were made of the attenuation of longitudinal waves propagating through <110> oriented single crystals of copper during cyclic deformation. A general review 'The Use of High Frequency Ultrasonic Measurements to Study the Effects of Dislocations on the Mechanical Properties of Crystalline Solids' is included as an Appendix.

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Document Details

Document Type
Technical Report
Publication Date
Jan 23, 1964
Accession Number
AD0429004

Entities

People

  • Barry Z. Hyatt
  • Louis J. Teutonico

Tags

Communities of Interest

  • Air Platforms
  • Energy and Power Technologies

DTIC Thesaurus Topics

  • Crystal Structure
  • Crystals
  • Diffraction
  • Dynamics
  • Elastic Waves
  • Frequency
  • Grain Boundaries
  • Materials
  • Measurement
  • Mechanical Properties
  • Orientation (Direction)
  • Physical Properties
  • Polycrystals
  • Scattering
  • Strain Gages
  • Ultrasounds
  • X Rays

Readers

  • Materials Science and Engineering.
  • Mechanical Engineering/Mechanics of Materials.