STRAIN MEASUREMENTS ON A PRESSURIZED SOLID PROPELLANT GRAIN

Abstract

Measurements of the principal strains existing on the end cross section of five different solid propellant grains were made for two loading conditions, using the photoelastic coating technique. Surface re-enforcing effects were minimized by the application of a low-modulus (500 psi) birefringent resin as the coating medium. The principal stresses in the coating were separated by a graphical procedure. The results indicate that the coating technique gives a more realistic measurement of grain stress concentrations and surface strain magnitudes, and that stress measurements obtained from classical model theory are quite conservative.

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Document Details

Document Type
Technical Report
Publication Date
Mar 15, 1962
Accession Number
AD0274311

Entities

People

  • A. S. Miguel

Organizations

  • California Institute of Technology

Tags

Communities of Interest

  • Weapons Technologies

DTIC Thesaurus Topics

  • Data Reduction
  • Geometry
  • Internal Pressure
  • Jet Propulsion
  • Mathematics
  • Mechanical Properties
  • Mechanics
  • Modulus Of Elasticity
  • Physical Properties
  • Propellant Grains
  • Propellants
  • Shear Stresses
  • Solid Propellants
  • Stress Analysis
  • Stress Concentration
  • Stresses
  • Waveplates

Fields of Study

  • Physics

Readers

  • Computational Modeling and Simulation
  • Mechanical Engineering/Mechanics of Materials.
  • Rocket Propulsion.