Effects of functionalized carbon nanotubes on mode i and ode II interlaminar fracture toughness of a hybrid glass fiber/MWCNT/epoxy composite

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

Abstract

The objective of this investigation is to evaluate the effect of functionalized carbon nanotubes on the delamination behavior of S2-glass fiber/ multi-walled carbon nanotubes (MWCNTs)/epoxy hybrid composites. Interlaminar fracture toughness (IFT) specimens were made by wet filament winding using S-glass fiber and epoxy matrix. Different types of functionalized MWCNTs, a carboxyl functionalized carbon nanotube (COOH-CNT) with two different initial length distributions and a silane coupling agent functionalized carbon nanotube, were added into the epoxy material. The MWCNTs modified epoxy were used either as the matrix material for filament winding composite plies or used as resin interlayer material. The mode I and mode II quasi-static interlaminar fracture behaviors were characterized using the double cantilever beam and end-notched flexure tests, respectively. The interlaminar fracture test results were used to evaluate: 1) the effect of adding functionalized MWCNTs; 2) the effect of changing MWCNT types, aspect ratio, and concentration; and 3) the effect of adding a resin interlayer at the fracture surface on mode I and mode II fracture toughness. Compared to the baseline material, the mode I onset and propagation fracture toughness was increased by 109-139% by adding 1 weight percent (wt%) short COOH-CNTs into the matrix in the fiber reinforced plies and the resin interlayer at fracture interface. The highest mode II fracture toughness among laminates investigated (49% improvement compared to the baseline material) was achieved by adding 0.5 wt% COOH-CNTs into the fiber reinforced plies and 0.5 wt% long COOH-CNTs into the resin interlayer at fracture interface. Scanning electron microscope images of CNT-filled epoxy showed possible toughening mechanisms achieved by crack pinning and crack deflection by functionalized CNTs.

Original languageEnglish (US)
Title of host publication25th Technical Conference of the American Society for Composites and 14th US-Japan Conference on Composite Materials 2010
Pages776-794
Number of pages19
StatePublished - Dec 1 2010
Event25th Technical Conference of the American Society for Composites and 14th US-Japan Conference on Composite Materials 2010 - Dayton, OH, United States
Duration: Sep 20 2010Sep 22 2010

Publication series

Name25th Technical Conference of the American Society for Composites and 14th US-Japan Conference on Composite Materials 2010
Volume1

Other

Other25th Technical Conference of the American Society for Composites and 14th US-Japan Conference on Composite Materials 2010
CountryUnited States
CityDayton, OH
Period9/20/109/22/10

Fingerprint

Carbon Nanotubes
Glass fibers
Fracture toughness
Carbon nanotubes
Composite materials
Resins
Filament winding
Cracks
Silanes
fiberglass
Fibers
Toughening
Coupling agents
Cantilever beams
Delamination
Laminates
Aspect ratio
Electron microscopes
Scanning

All Science Journal Classification (ASJC) codes

  • Ceramics and Composites

Cite this

Zhu, Y., & Bakis, C. E. (2010). Effects of functionalized carbon nanotubes on mode i and ode II interlaminar fracture toughness of a hybrid glass fiber/MWCNT/epoxy composite. In 25th Technical Conference of the American Society for Composites and 14th US-Japan Conference on Composite Materials 2010 (pp. 776-794). (25th Technical Conference of the American Society for Composites and 14th US-Japan Conference on Composite Materials 2010; Vol. 1).
Zhu, Y. ; Bakis, Charles E. / Effects of functionalized carbon nanotubes on mode i and ode II interlaminar fracture toughness of a hybrid glass fiber/MWCNT/epoxy composite. 25th Technical Conference of the American Society for Composites and 14th US-Japan Conference on Composite Materials 2010. 2010. pp. 776-794 (25th Technical Conference of the American Society for Composites and 14th US-Japan Conference on Composite Materials 2010).
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title = "Effects of functionalized carbon nanotubes on mode i and ode II interlaminar fracture toughness of a hybrid glass fiber/MWCNT/epoxy composite",
abstract = "The objective of this investigation is to evaluate the effect of functionalized carbon nanotubes on the delamination behavior of S2-glass fiber/ multi-walled carbon nanotubes (MWCNTs)/epoxy hybrid composites. Interlaminar fracture toughness (IFT) specimens were made by wet filament winding using S-glass fiber and epoxy matrix. Different types of functionalized MWCNTs, a carboxyl functionalized carbon nanotube (COOH-CNT) with two different initial length distributions and a silane coupling agent functionalized carbon nanotube, were added into the epoxy material. The MWCNTs modified epoxy were used either as the matrix material for filament winding composite plies or used as resin interlayer material. The mode I and mode II quasi-static interlaminar fracture behaviors were characterized using the double cantilever beam and end-notched flexure tests, respectively. The interlaminar fracture test results were used to evaluate: 1) the effect of adding functionalized MWCNTs; 2) the effect of changing MWCNT types, aspect ratio, and concentration; and 3) the effect of adding a resin interlayer at the fracture surface on mode I and mode II fracture toughness. Compared to the baseline material, the mode I onset and propagation fracture toughness was increased by 109-139{\%} by adding 1 weight percent (wt{\%}) short COOH-CNTs into the matrix in the fiber reinforced plies and the resin interlayer at fracture interface. The highest mode II fracture toughness among laminates investigated (49{\%} improvement compared to the baseline material) was achieved by adding 0.5 wt{\%} COOH-CNTs into the fiber reinforced plies and 0.5 wt{\%} long COOH-CNTs into the resin interlayer at fracture interface. Scanning electron microscope images of CNT-filled epoxy showed possible toughening mechanisms achieved by crack pinning and crack deflection by functionalized CNTs.",
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Zhu, Y & Bakis, CE 2010, Effects of functionalized carbon nanotubes on mode i and ode II interlaminar fracture toughness of a hybrid glass fiber/MWCNT/epoxy composite. in 25th Technical Conference of the American Society for Composites and 14th US-Japan Conference on Composite Materials 2010. 25th Technical Conference of the American Society for Composites and 14th US-Japan Conference on Composite Materials 2010, vol. 1, pp. 776-794, 25th Technical Conference of the American Society for Composites and 14th US-Japan Conference on Composite Materials 2010, Dayton, OH, United States, 9/20/10.

Effects of functionalized carbon nanotubes on mode i and ode II interlaminar fracture toughness of a hybrid glass fiber/MWCNT/epoxy composite. / Zhu, Y.; Bakis, Charles E.

25th Technical Conference of the American Society for Composites and 14th US-Japan Conference on Composite Materials 2010. 2010. p. 776-794 (25th Technical Conference of the American Society for Composites and 14th US-Japan Conference on Composite Materials 2010; Vol. 1).

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

TY - GEN

T1 - Effects of functionalized carbon nanotubes on mode i and ode II interlaminar fracture toughness of a hybrid glass fiber/MWCNT/epoxy composite

AU - Zhu, Y.

AU - Bakis, Charles E.

PY - 2010/12/1

Y1 - 2010/12/1

N2 - The objective of this investigation is to evaluate the effect of functionalized carbon nanotubes on the delamination behavior of S2-glass fiber/ multi-walled carbon nanotubes (MWCNTs)/epoxy hybrid composites. Interlaminar fracture toughness (IFT) specimens were made by wet filament winding using S-glass fiber and epoxy matrix. Different types of functionalized MWCNTs, a carboxyl functionalized carbon nanotube (COOH-CNT) with two different initial length distributions and a silane coupling agent functionalized carbon nanotube, were added into the epoxy material. The MWCNTs modified epoxy were used either as the matrix material for filament winding composite plies or used as resin interlayer material. The mode I and mode II quasi-static interlaminar fracture behaviors were characterized using the double cantilever beam and end-notched flexure tests, respectively. The interlaminar fracture test results were used to evaluate: 1) the effect of adding functionalized MWCNTs; 2) the effect of changing MWCNT types, aspect ratio, and concentration; and 3) the effect of adding a resin interlayer at the fracture surface on mode I and mode II fracture toughness. Compared to the baseline material, the mode I onset and propagation fracture toughness was increased by 109-139% by adding 1 weight percent (wt%) short COOH-CNTs into the matrix in the fiber reinforced plies and the resin interlayer at fracture interface. The highest mode II fracture toughness among laminates investigated (49% improvement compared to the baseline material) was achieved by adding 0.5 wt% COOH-CNTs into the fiber reinforced plies and 0.5 wt% long COOH-CNTs into the resin interlayer at fracture interface. Scanning electron microscope images of CNT-filled epoxy showed possible toughening mechanisms achieved by crack pinning and crack deflection by functionalized CNTs.

AB - The objective of this investigation is to evaluate the effect of functionalized carbon nanotubes on the delamination behavior of S2-glass fiber/ multi-walled carbon nanotubes (MWCNTs)/epoxy hybrid composites. Interlaminar fracture toughness (IFT) specimens were made by wet filament winding using S-glass fiber and epoxy matrix. Different types of functionalized MWCNTs, a carboxyl functionalized carbon nanotube (COOH-CNT) with two different initial length distributions and a silane coupling agent functionalized carbon nanotube, were added into the epoxy material. The MWCNTs modified epoxy were used either as the matrix material for filament winding composite plies or used as resin interlayer material. The mode I and mode II quasi-static interlaminar fracture behaviors were characterized using the double cantilever beam and end-notched flexure tests, respectively. The interlaminar fracture test results were used to evaluate: 1) the effect of adding functionalized MWCNTs; 2) the effect of changing MWCNT types, aspect ratio, and concentration; and 3) the effect of adding a resin interlayer at the fracture surface on mode I and mode II fracture toughness. Compared to the baseline material, the mode I onset and propagation fracture toughness was increased by 109-139% by adding 1 weight percent (wt%) short COOH-CNTs into the matrix in the fiber reinforced plies and the resin interlayer at fracture interface. The highest mode II fracture toughness among laminates investigated (49% improvement compared to the baseline material) was achieved by adding 0.5 wt% COOH-CNTs into the fiber reinforced plies and 0.5 wt% long COOH-CNTs into the resin interlayer at fracture interface. Scanning electron microscope images of CNT-filled epoxy showed possible toughening mechanisms achieved by crack pinning and crack deflection by functionalized CNTs.

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M3 - Conference contribution

SN - 9781617820137

T3 - 25th Technical Conference of the American Society for Composites and 14th US-Japan Conference on Composite Materials 2010

SP - 776

EP - 794

BT - 25th Technical Conference of the American Society for Composites and 14th US-Japan Conference on Composite Materials 2010

ER -

Zhu Y, Bakis CE. Effects of functionalized carbon nanotubes on mode i and ode II interlaminar fracture toughness of a hybrid glass fiber/MWCNT/epoxy composite. In 25th Technical Conference of the American Society for Composites and 14th US-Japan Conference on Composite Materials 2010. 2010. p. 776-794. (25th Technical Conference of the American Society for Composites and 14th US-Japan Conference on Composite Materials 2010).