Dynamic Properties of S-200-E Beryllium

Abstract

Results of an experimental study of the dynamic properties of S-200- E beryllium are presented. Areas studied included uniaxial stress behavior, elastic constants, equation of state, elastic precursor decay, and shock wave profiles. The material showed a yield 'plateau' and then significant strain hardening, and exhibited strain rate sensitivity. Longitudinal and shear wave velocities at 20C were 12.84 and 8.86 mm/microsec. The shock wave equation of state up to 30 kb was determined to be linear: sigma sub H = 0.7 + 152.7 u sub p. Compressive wave tests showed a ramped, non-steady-state elastic precursor, and shock wave profiles showing both release behavior and attenuation were obtained. Scanning microfractographs were taken of spall fracture surfaces.

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Document Details

Document Type
Technical Report
Publication Date
Feb 01, 1972
Accession Number
AD0742522

Entities

People

  • Douglas R. Christman
  • Frederick J. Feistmann

Organizations

  • General Motors

Tags

Communities of Interest

  • Advanced Electronics
  • Air Platforms
  • Human Systems
  • Space

DTIC Thesaurus Topics

  • Bulk Modulus
  • Ceramic Materials
  • Elastic Properties
  • Elastic Waves
  • Grain Size
  • Hydrostatic Pressure
  • Manufacturing
  • Materials
  • Materials Testing
  • Measurement
  • Mechanical Properties
  • Mechanical Working
  • Mechanics
  • Metals
  • Tensile Strength
  • Test Methods
  • Wave Propagation

Readers

  • Combustion Dynamics and Shock Wave Physics.
  • Materials Science (Mechanical Engineering).
  • Mechanical Engineering/Mechanics of Materials.