AN APPARATUS FOR MEASURING THE BULK MODULUS OF SOLID PROPELLANTS

Abstract

An apparatus was developed to measure the equilibrium bulk modulus of solid propellants and other visco-elastic materials at pressures between 0 and 2500 psig. Hydrostatic pressure is applied to a test sample in the high- pressure chamber of a pressure intensifier. Measurement of the volume displaced by the low-pressure end of the double piston provides high sensitivity in the measurement of the volume change in the high-pressure chamber. The measured isothermal modulus is sufficiently accurate for use in quasi-static stress analysis of solid-propellant rockets. In addition, the adiabatic bulk modulus can be estimated from pressure-volume-temperature data. Small voids in a propellant are vividly shown by a very fast initial rise in the curve of pressure vs. volume change.

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Document Details

Document Type
Technical Report
Publication Date
Dec 01, 1962
Accession Number
AD0286068

Entities

People

  • Neal C. Wogsland

Organizations

  • Army Research Office

Tags

DTIC Thesaurus Topics

  • Accuracy
  • Bulk Modulus
  • Composite Materials
  • Elastic Materials
  • Gages
  • High Pressure
  • Hydrostatic Pressure
  • Materials Laboratories
  • Measurement
  • Mechanics
  • Modulus Of Elasticity
  • Pressure Gages
  • Propellants
  • Shear Modulus
  • Solid Propellants
  • Stress Strain Relations
  • United States

Fields of Study

  • Physics

Readers

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