Liner Technology Program. Volume 1. Fracture Energy Method Development

Abstract

The objective was to develop a test method for the measurement of adhesive and cohesive fracture energy in a form that would permit the evaluation in engineering terms of the propellant liner bondline. After screening existing test specimens, the scarf-joint specimen was selected as the one that most closely met the AFRPL criteria. The J integral fracture criterion was extended to account for the nonlinear viscoelastic effects of solid propellants and theoretically applied to the data analysis of this test. The test specimen was optimized using 1-, 2- and 3-dimensional stress analyses plus simple experimental evaluations. Experiments included tests under superimposed pressures, combined tension and shear, and simultaneous cooling and deformation. Comparisons were made with other test methods and on specimens cut from motors.

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Document Details

Document Type
Technical Report
Publication Date
May 01, 1982
Accession Number
ADA115977

Entities

People

  • Kenneth W. Bills Jr.
  • Richard A. Schapery

Organizations

  • Aerojet Rocketdyne Holdings

Tags

Communities of Interest

  • Air Platforms
  • Weapons Technologies

DTIC Thesaurus Topics

  • Crack Propagation
  • Data Acquisition
  • Failure Mode And Effect Analysis
  • Geometry
  • J Integrals
  • Materials
  • Materials Testing
  • Measurement
  • Mechanics
  • Modulus Of Elasticity
  • Shear Tests
  • Solid Propellants
  • Standards
  • Test And Evaluation
  • Test Methods
  • Three Dimensional
  • Two Dimensional

Readers

  • Rocket Propulsion.
  • Structural Health Monitoring of Composite Structures.