Local strain concentrations in a reinforced microvascular network

Nancy R Sottos, A. Hamilton, S. Olugebefola, S. R. Whiteb

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

Strain concentrations associated with the presence of a microvascular network in a polymer matrix are measured using fluorescent digital image correlation (FDIC). The accuracy of the measurement technique is established for a specimen containing only a single microchannel. The influence of localized micro- and nano- particle reinforcement around the channel is also investigated using this simplified geometry. Three-dimensional network specimens with different structural designs were fabricated and loaded in uniaxial tension. The resulting strain concentrations are compared as a function of channel spacing and location. The results provide insight into the mechanical behavior of microvascular networks and demonstrate the utility of FDIC as a characterization tool at these length scales.

Original languageEnglish (US)
Title of host publicationICCM-17 - 17th International Conference on Composite Materials
StatePublished - 2009
Event17th International Conference on Composite Materials, ICCM-17 - Edinburgh, United Kingdom
Duration: Jul 27 2009Jul 31 2009

Publication series

NameICCM International Conferences on Composite Materials

Other

Other17th International Conference on Composite Materials, ICCM-17
Country/TerritoryUnited Kingdom
CityEdinburgh
Period7/27/097/31/09

Keywords

  • Digital image correlation
  • Microvascular
  • Nanoscale reinforcement

ASJC Scopus subject areas

  • General Engineering
  • Ceramics and Composites

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