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Influence of polyethylene molecular conformation on taylor impact measurements: A comparison of HDPE, UHMWPE, and PEX

  • Eric Brown
  • , Carl Patrick Trujillo
  • , George Thompson Gray

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

22 Scopus citations

Abstract

The current work presents the comparison of the Taylor impact response of three different industrial forms of polyethylene. Specifically, high-density polyethylene (HDPE), ultra high molecular weight polyethylene (UHMWPE), and cross-linked polyethylene (PEX) were tested. From quasi-static and intermediate strain-rate compression measurements as a function of temperature (-75 to 100°C) and strain-rate (10-4 to 2600 s-1) the responses of UHMWPE and PEX are very similar, whereas HDPE exhibits some differences. The HDPE samples display a significantly higher yield stress followed by a flat flow behavior. Conversely UHMWPE and PEX both exhibit significant strain hardening after yield. Taylor impact experiments are presented as a function of velocity to probe the dynamic yield behavior and ductile-to-brittle response of these polymers.

Original languageEnglish
Title of host publicationShock Compression of Condensed Matter - 2007
Subtitle of host publicationProceedings of the Conference of the American Physical Society Topical Group on Shock Compression of Condensed Matter, 2007 APS SCCM
Pages691-694
Number of pages4
DOIs
StatePublished - Dec 1 2007
Event15th Biennial International Conference of the APS Topical Group on Shock Compression of Condensed Matter, SCCM 2007 -
Duration: Dec 1 2007 → …

Publication series

NameAIP Conference Proceedings
Volume955
ISSN (Print)0094-243X
ISSN (Electronic)1551-7616

Conference

Conference15th Biennial International Conference of the APS Topical Group on Shock Compression of Condensed Matter, SCCM 2007
Period12/1/07 → …

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