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The effect of braid angle on the dynamic response of 3-D four direction carbon/epoxy braid composites at high strain rates

  • Harbin Institute of Technology

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

Abstract

In this paper, the compressive properties of two different braid angles of 15° and 30° of 3-D four-direction braid carbon/epoxy composites have been investigated to evaluate the compressive failure mode at different strain rates by using the split Hopkinson pressure bar (SHPB). Samples with different braid angles were subjected to a high strain rate compression loading at strain rates, ranging from almost 500/s to 2000/s. A copper disk was selected to use as a pulse shaper to ensure that the stress and strain in the specimen were uniform and deformed at a nearly constant strain rate over most of the dynamic compression duration. The effects of the strain rates and braid angles on peak stress and stiffness were discussed in the study. The results indicated that composites with a braid angle 15° had larger peak stress and stiffness at high strain rates.

Original languageEnglish
Title of host publicationStructures Under Shock and Impact IX
Pages137-146
Number of pages10
DOIs
StatePublished - 2006
Event9th International Conference on Structures Under Shock And Impact 2006, SUSI 2006, SU06 - The New Forest, United Kingdom
Duration: 3 Jul 20065 Jul 2006

Publication series

NameWIT Transactions on the Built Environment
Volume87
ISSN (Print)1743-3509

Conference

Conference9th International Conference on Structures Under Shock And Impact 2006, SUSI 2006, SU06
Country/TerritoryUnited Kingdom
CityThe New Forest
Period3/07/065/07/06

Keywords

  • Braid angle
  • Braid composite material
  • Dynamic peak stress
  • High strain rate
  • SHPB

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