Fracture toughness characterization of nanoreinforced carbon-fiber composite materials for damage mitigation

Jennifer A. Van Der Vennet, Terrisa Duenas, Yuris Dzenis, Chad T. Peterson, Charles E. Bakis, Daniel Carter, J. Keith Roberts

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

2 Scopus citations

Abstract

Continuous polyacrylonitrile (PAN) nanofibers fabricated via the electrospinning process and commercially available silica nanoparticles were investigated and compared for their impact mitigating effects when incorporated into composite materials. The nanofibers were introduced at ply interfaces using two different approaches while the nanoparticles were mixed into the matrix material. Behavior was experimentally characterized by determining the fracture toughness of flat carbon-fiber composite coupons using the double cantilever beam (DCB) test according to ASTM D5528. The nanofibers were introduced to the composite coupons by directly electrospinning the fibers onto the ply surfaces or transferring the fibers from an interim substrate, or "nanomat", while the nanosilica particles were mixed into the resin system during vacuum bagging hand layup. Testing facilitated the calculation of Mode I strain energy release rates. Preliminary results show that when compared to a baseline coupon without nanoreinforcement, there is a 54.5%, 43.1%, and 26.9% reduction in Gavg for the nanomat, nanosilica, and directly deposited nanomaterial coupons, respectively. Directly deposited nanofibers outperformed the nanosilica reinforcement by 16.2% and the nanomat approach by 27.6%. Basic materials (carbon-fiber ply material and matrix system) and incomplete composite consolidation were cited as contributors to poor test coupon quality and detrimental to Mode I performance.

Original languageEnglish (US)
Title of host publicationBehavior and Mechanics of Multifunctional Materials and Composites 2011
DOIs
StatePublished - 2011
EventBehavior and Mechanics of Multifunctional Materials and Composites 2011 - San Diego, CA, United States
Duration: Mar 7 2011Mar 9 2011

Publication series

NameProceedings of SPIE - The International Society for Optical Engineering
Volume7978
ISSN (Print)0277-786X

Conference

ConferenceBehavior and Mechanics of Multifunctional Materials and Composites 2011
CountryUnited States
CitySan Diego, CA
Period3/7/113/9/11

Keywords

  • Composites
  • Double cantilever beam (DCB)
  • Electrospinning
  • Fracture toughness
  • Mode I interlaminar fracture
  • Nanofibers
  • Nanoparticles

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Computer Science Applications
  • Applied Mathematics
  • Electrical and Electronic Engineering

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  • Cite this

    Van Der Vennet, J. A., Duenas, T., Dzenis, Y., Peterson, C. T., Bakis, C. E., Carter, D., & Roberts, J. K. (2011). Fracture toughness characterization of nanoreinforced carbon-fiber composite materials for damage mitigation. In Behavior and Mechanics of Multifunctional Materials and Composites 2011 [797823] (Proceedings of SPIE - The International Society for Optical Engineering; Vol. 7978). https://doi.org/10.1117/12.880194