Fracto-Emission Accompanying Adhesive Failure

Abstract

For a wide range of materials, emission of electrons (EE), positive ions (PIE), and photons (phE) is observed accompanying fracture. Here we report on work concerning emission from adhesive failure. The systems studied include interfacial failure between epoxy--brittle materials, polybutadiene-glass, and pressure sensitive adhesives--polymers. When interfacial failure occurs, it produces highly excited surfaces with intense charge separation. De-excitation in the presence of surface charge produces intense, long lasting (several minutes) emission. Energy distribution curves for both EE and PIE decrease monotonically with a tail extending out to several hundred eV. For a few systems we compare EE and phE which show different decay characteristics.

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Document Details

Document Type
Technical Report
Publication Date
Sep 01, 1981
Accession Number
ADA104050

Entities

People

  • E. E. Donaldson
  • J. T. Dickinson
  • L. C. Jensen
  • M. K. Park

Organizations

  • Washington State University

Tags

Communities of Interest

  • Energy and Power Technologies
  • Space
  • Weapons Technologies

DTIC Thesaurus Topics

  • Adhesives
  • Charged Particles
  • Chemistry
  • Composite Materials
  • Delamination
  • Elastomers
  • Electron Emission
  • Electrons
  • Engineering
  • Graphitic Materials
  • Materials
  • Military Research
  • Photoexcitation
  • Physics
  • Polymers
  • Synthetic Rubber
  • Universities

Readers

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  • Materials Science and Engineering.
  • Mathematics or Statistics

Technology Areas

  • Microelectronics