Essential work of fracture and viscoplastic response of a carbon black-filled thermoplastic elastomer

A. D. Drozdov, S. Clyens, J. Christiansen

Research output: Contribution to journalArticlepeer-review

4 Scopus citations

Abstract

Observations are reported on a carbon black-filled thermoplastic elastomer in uniaxial cyclic tensile tests with various maximum strains and double-edge-notched-tensile (DENT) tests with various ligament widths at ambient temperature. It is shown that the stress-strain diagrams in DENT tests measured relatively far away from the ligament coincide with those in tensile cyclic tests on un-notched samples. To describe the viscoplastic response of un-notched specimens, constitutive equations are derived, and adjustable parameters are found by fitting the experimental data. It is demonstrated how the energy stored in a DENT sample under tension can be accounted for in calculations of the specific essential work of fracture.

Original languageEnglish
Pages (from-to)1977-1995
Number of pages19
JournalEngineering Fracture Mechanics
Volume76
Issue number13
DOIs
StatePublished - 1 Sep 2009
Externally publishedYes

Keywords

  • Constitutive modelling
  • EWF concept
  • Polymer matrix composites
  • Strain rate effects
  • Viscoplasticity

ASJC Scopus subject areas

  • General Materials Science
  • Mechanics of Materials
  • Mechanical Engineering

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