High-Strain Rate Testing of Gun Propellants

Abstract

A Hopkinson split-pressure bar apparatus was used to test JA-2, M30 and HELOVA gun propellants at strain rates of 600-2,000/s. The split-bar apparatus, a device widely used to measure the dynamic mechanical properties of materials, consists of two elastic bars with a specimen sandwiched between them and a means of generating an elastic stress pulse in the bars. The specimen is loaded beyond the elastic range. Instrumentation of the bars allows recording of the strain history in the bars during the test event. The strain history on the input bar gives a record of the strain rate history in the sample. The output bar strain history is proportional to the stress history in the sample. Brittleness, Compressive properties; Double base gun propellants, Dynamic response; Fracture (mechanics).

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Document Details

Document Type
Technical Report
Publication Date
Dec 01, 1988
Accession Number
ADA208826

Entities

People

  • Harry J. Hoffman

Tags

Communities of Interest

  • Ground and Sea Platforms
  • Space
  • Weapons Technologies

DTIC Thesaurus Topics

  • Composite Materials
  • Composite Propellants
  • Computer Programs
  • Explosives
  • Gun Propellants
  • Materials Laboratories
  • Materials Processing
  • Mechanical Properties
  • Mechanical Working
  • Mechanics
  • Modulus Of Elasticity
  • Physics Laboratories
  • Propellants
  • Solid Propellants
  • Stress Strain Relations
  • Stress Waves
  • Stresses

Readers

  • Mechanical Engineering/Mechanics of Materials.
  • Rocket Propulsion.