Studies on the Mechanical Response and Fracture of Viscoelastic Composite Materials.

Abstract

This final report describes research activities conducted during the course of the grant. They were concerned generally with the analysis of cracks in particulate and fibrous viscoelastic media and the effect of cracks on the mechanical behavior of composites. The work is presented in five sections: (1) Elastostatic Fields in a Crack Tip Neighborhood-Measurements and Uniqueness; (2) On the Mechanical Behavior of Solid Propellant under Transient Temperatures; (3) Some Viscoelastic Crack Growth Relations for Orthotropic and Prestrained Media; (4) A theory of Time-Dependent Bonding for Viscoelastic Media; and (5) A method for Predicting Crack Growth in nonhomogeneous Viscoelastic Media. Only abstracts and conclusions are given in the last three sections as the studies were previously published in separate reports. (Author)

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Document Details

Document Type
Technical Report
Publication Date
Jul 01, 1978
Accession Number
ADA059526

Entities

People

  • J. H. Schmidt Jr
  • R. A. Schapery

Organizations

  • Texas A&M University

Tags

Communities of Interest

  • Air Platforms
  • Energy and Power Technologies
  • Weapons Technologies

DTIC Thesaurus Topics

  • Composite Materials
  • Crack Tips
  • Cracks
  • Diffraction
  • Finite Element Analysis
  • Fracture (Mechanics)
  • Geometry
  • Material Degradation Processes
  • Materials
  • Materials Science
  • Measurement
  • Mechanics
  • Photography
  • Propellants
  • Shear Modulus
  • Shear Stresses
  • Solid Propellants

Readers

  • Materials Science (Mechanical Engineering).
  • Structural Dynamics.
  • Technical Research and Report Writing.