Solid Spherical Glass Particle Impingement Studies of Plastic Materials.

Abstract

Erosion experiments on polymethyl methacrylate (PMMA), polycarbonate, and polytetrafluoroethylene (PTFE) were conducted with spherical glass beads impacting at normal incidence. Optical and scanning electron microscopic studies and surface profile measurements were made on specimens at predetermined test intervals. During the initial stage of damage to PMMA and polycarbonate, material expands or builds up above the original surface. However, this buildup disappears as testing progresses. Little or no buildup was observed on PTFE. PTFE is observed to be the most resistant material to erosion and PMMA the least. At low impact pressures, material removal mechanisms are believed to be similar to those for metallic materials. However, at higher pressures, surface melting is indicated at the center of impact. Deformation and fatigue appear to play major roles in the material removal process with possible melting or softening.

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Document Details

Document Type
Technical Report
Publication Date
Apr 01, 1983
Accession Number
ADA305372

Entities

People

  • Donald H. Buckley
  • P. V. Rao
  • Stanley G. Young

Organizations

  • Glenn Research Center

Tags

Communities of Interest

  • Engineered Resilient Systems
  • Space
  • Weapons Technologies

DTIC Thesaurus Topics

  • Aging (Materials)
  • Biomedical And Dental Materials
  • Chemical Synthesis
  • Chemistry
  • Composite Materials
  • Electron Microscopes
  • Erosion Resistance
  • Fluoropolymers
  • Hydrothermal Aging
  • Material Degradation Processes
  • Materials Science
  • Plastics
  • Polymer Chemistry
  • Polymer Degradation
  • Polymeric Films
  • Resins
  • Tensile Strength

Readers

  • Polymer Science and Engineering.
  • Pulsed Power and Plasma Physics.
  • Structural Health Monitoring of Composite Structures.

Technology Areas

  • Microelectronics
  • Microelectronics - Graphene