DETERMINATION OF REINFORCEMENT UNBONDING OF COMPOSITES BY A VIBRATION TECHNIQUE,

Abstract

An experimental technique was developed to determine the conditions for the onset of reinforcement unbonding in composite materials. The technique is based upon the continuous measurement of the dynamic moduli and damping of tensile specimens. The samples are subjected to low amplitude longitudinal and torsional oscillations superimposed on the tensile loading. Experiments were performed at room temperature on quartz particle filled resin specimens. The results for specimens with epoxy binder indicated that unbonding did not occur prior to overall failure. Those for the polyester specimens, however, showed that early particle separation occurred under certain conditions. (Author)

Document Details

Document Type
Technical Report
Publication Date
Aug 01, 1968
Accession Number
AD0684157

Entities

People

  • Assa Rotem
  • Jacob M. Lifshitz

Organizations

  • Technion – Israel Institute of Technology

Tags

DTIC Thesaurus Topics

  • Amplitude
  • Biomedical And Dental Materials
  • Composite Materials
  • Films
  • Materials
  • Measurement
  • Motion
  • Oscillation
  • Particles
  • Polyesters
  • Polymeric Films
  • Specialty Uses Of Chemicals
  • Vibration

Fields of Study

  • Materials science

Readers

  • Mechanical Engineering/Mechanics of Materials.
  • Reinforced Composite Materials