Compressive Properties of Extruded Polytetrafluoroethylene

Abstract

Polymers are becoming increasingly used in aerospace structural applications, where they experience complex, non-static loads. Correspondingly, the mechanical properties at high strain rates are of increasing importance in these applications. This paper presents an investigation of the properties of Dupont 9B polytetrafluoroethylene (PTFE) across strain rates from 10-3 to 10 5 s-1 (see paper). The samples were tested using an Instron mechanical testing machine for static loading, traditional split Hopkinson pressure bars (SHPBs) for high strain rates, and a miniaturized SHPB for ultra-high strain rates. Additionally, the material was tested using dynamic mechanical analysis to determine the effects of time-temperature superposition on the strain rate behavior of the samples. The results of the experiments are analyzed using the Zerillie-Armstrong model for polymers, which shows good agreement with other PTFE studies.

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Document Details

Document Type
Technical Report
Publication Date
Jul 01, 2007
Accession Number
ADA470333

Entities

People

  • Clive R. Siviour
  • Eric N Brown
  • J L Jordan
  • Jason R. Foley

Organizations

  • Air Force Research Laboratory

Tags

Communities of Interest

  • Ground and Sea Platforms

DTIC Thesaurus Topics

  • Air Force
  • Air Force Research Laboratories
  • Chemistry
  • Equations
  • Fluoropolymers
  • Frequency
  • Heat Energy
  • Low Temperature
  • Materials
  • Materials Science
  • Measurement
  • Mechanical Properties
  • Mechanics
  • Modulus Of Elasticity
  • Phase Transformations
  • Three Dimensional
  • Transition Temperature

Fields of Study

  • Materials science

Readers

  • Mechanical Engineering/Mechanics of Materials.
  • Polymer Science and Engineering.

Technology Areas

  • Space