SOLID PROPELLANT MECHANICAL PROPERTIES INVESTIGATIONS

Abstract

Carboxy-terminated polybutadiene and polyurethane compositions for use in this program were prepared; sufficient quantities of bagged and unbagged end-bonded specimens are in desiccated storage. Instron quality-control test data for all batches of the polyurethane composition are tabulated; although these data do not provide good evidence for batch-to-batch reproducibility, volumetric swelling ratios show little difference among batches of each composition. The dilatometer was completed and is undergoing final evaluation and calibration. Preliminary measurements of volume change during extension at constant strain rate demonstrate adequate sensitivity and effective operation. Tests of desiccated end-bonded specimens at several constant strain rates and temperatures using the Instron were completed; ultimate property data on carboxyterminated polybutadiene composition AFBA-1 are not particularly consistent and do not yield a well-defined failure envelope, except in the case of batch NF2/238. Some preliminary data are presented on constant load and constant loading rate tests.

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Document Details

Document Type
Technical Report
Publication Date
Dec 13, 1962
Accession Number
AD0295084

Entities

People

  • James A. Rinde
  • Norman Fishman

Organizations

  • SRI International

Tags

Communities of Interest

  • Weapons Technologies

DTIC Thesaurus Topics

  • Air Force
  • Control Systems
  • Dilatometers
  • Failure Mode And Effect Analysis
  • Government Procurement
  • Manufacturing
  • Materials
  • Measurement
  • Mechanical Properties
  • Moisture Content
  • Propellants
  • Quality Control
  • Solid Propellants
  • Strain Rate
  • Stress Strain Relations
  • Stresses
  • Synthetic Rubber

Readers

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