Mechanical Properties of Structural Grades of Beryllium at High Strain Rates

Abstract

An experimental technique is described for obtaining high rate tensile stress-strain data on materials with limited ductility. A modified split Hopkinson bar apparatus is used to obtain data on three advanced structural grades of beryllium at strain rates up to 500/sec. The data indicate that there is no significant loss in ductility with increasing strain rate in any of the three grades of beryllium. Flow stress is shown to increase linearly with strain rate up to strain rates of 1-10/sec and then more abruptly at higher rates.

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Document Details

Document Type
Technical Report
Publication Date
Oct 01, 1975
Accession Number
ADA020076

Entities

People

  • T. Nicholas

Organizations

  • Air Force Research Laboratory

Tags

Communities of Interest

  • Air Platforms
  • Autonomy
  • Energy and Power Technologies

DTIC Thesaurus Topics

  • Air Force
  • Air Force Facilities
  • Amplitude
  • Compression
  • Computers
  • Deflection
  • Materials
  • Materials Laboratories
  • Mechanical Properties
  • Mechanical Working
  • Strain Gages
  • Stress Strain Relations
  • Stresses
  • Tensile Properties
  • Tensile Strength
  • Tensile Stress
  • Waves

Fields of Study

  • Physics

Readers

  • Mechanical Engineering/Mechanics of Materials.