Behaviour and Benefits of Intimately Mixed Hybrid Composites.

Abstract

Starting from the constant strain theory of hybrid tensile strength, which only describes a lower bound for most hybrid composites, this report develops arguments to show how, in finely-mixed unidirectional hybrids the reinforcing strength of a set of fibres will assume higher values depending on their surroundings. In the case of hybrids of high modulus (HMS) carbon fibre, three characteristic levels of strength are predicted and indeed observed in the experiments reported here. These levels are, the mean fibre strength, the bundle strength referred to short guage length, and the brittle strength which is also observed in all-HMS composites. Statistical co-ordination solutions are developed which predict the compositions of the average-bundle and the bundle-brittle transitions and also the hybrid tensile strength. (Author-PL).

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Document Details

Document Type
Technical Report
Publication Date
Nov 01, 1978
Accession Number
ADA065445

Entities

People

  • K. D. Potter
  • N. J. Parratt

Tags

Communities of Interest

  • C4I
  • Energy and Power Technologies
  • Weapons Technologies

DTIC Thesaurus Topics

  • Biocomposites
  • Carbon Fibers
  • Composite Materials
  • Crack Propagation
  • Fiber Reinforced Polymers
  • Fibers
  • Flexural Strength
  • Glass Fibers
  • Laminates
  • Materials
  • Materials Testing
  • Measurement
  • Reinforced Plastics
  • Shear Strength
  • Stresses
  • Tensile Strength
  • Test Methods

Fields of Study

  • Materials science

Readers

  • Educational Psychology
  • Materials Science (Mechanical Engineering).
  • Reinforced Composite Materials