Dynamic testing of composite laminates with a tensile split Hopkinson bar

H. Eskandari, James Nemes

Research output: Contribution to journalArticle

28 Citations (Scopus)

Abstract

A tensile version of the split Hopkinson bar, suitable for dynamic testing of laminated composite materials, is introduced. A pulse duration of 200-250 microseconds and peak strain rates of up to 350 s-1 are obtained. Tests performed on a quasi-isotropic lay-up of graphite-epoxy show good repeatability. To determine the significance of rate-dependency, static tests were also performed using an identical specimen configuration as in the dynamic tests. Comparison of the Hopkinson bar tests to those performed at a quasi-static rate on a hydraulic test machine shows the rate-dependency of this lay-up of graphite-epoxy. Tensile strength and fracture strain are found to be higher for dynamic testing.

Original languageEnglish (US)
Pages (from-to)260-273
Number of pages14
JournalJournal of Composite Materials
Volume34
Issue number4
DOIs
StatePublished - Jan 1 2000

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Laminates
Graphite
Composite materials
Testing
Laminated composites
Strain rate
Tensile strength
Hydraulics

All Science Journal Classification (ASJC) codes

  • Ceramics and Composites
  • Mechanics of Materials
  • Mechanical Engineering
  • Materials Chemistry

Cite this

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abstract = "A tensile version of the split Hopkinson bar, suitable for dynamic testing of laminated composite materials, is introduced. A pulse duration of 200-250 microseconds and peak strain rates of up to 350 s-1 are obtained. Tests performed on a quasi-isotropic lay-up of graphite-epoxy show good repeatability. To determine the significance of rate-dependency, static tests were also performed using an identical specimen configuration as in the dynamic tests. Comparison of the Hopkinson bar tests to those performed at a quasi-static rate on a hydraulic test machine shows the rate-dependency of this lay-up of graphite-epoxy. Tensile strength and fracture strain are found to be higher for dynamic testing.",
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Dynamic testing of composite laminates with a tensile split Hopkinson bar. / Eskandari, H.; Nemes, James.

In: Journal of Composite Materials, Vol. 34, No. 4, 01.01.2000, p. 260-273.

Research output: Contribution to journalArticle

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AU - Nemes, James

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