TY - GEN
T1 - Elastic properties of aligned carbon nanotube polymer nanocomposites with controlled morphology
AU - Handlin, D.
AU - de Villoria, R. Guzmán
AU - Chan, S. H.
AU - Takahashi, K.
AU - Cebeci, H.
AU - Williams, M.
AU - Parsons, E. M.
AU - Socrate, S.
AU - Wardle, B. L.
PY - 2012
Y1 - 2012
N2 - The theoretical elastic properties of aligned carbon nanotube polymer nanocomposites (A-PNCs) have been predicted by standard composite theory, however, a complete experimental characterization of their (presumed) transversally isotropic properties has not been presented to date. High volume fraction A-PNCs are fabricated by biaxial mechanical densification of the CNTs, followed by polymer infiltration via capillarity-assisted wetting using an aerospace-grade epoxy. Because of the dimensions of the samples (~1mm3), only bulk compression or nanomechanical tests have been attempted previously. Here, optical strain mapping is used in conjunction with simple mechanical loadings (here simple uniaxial dogbone specimens) in order to characterize the linear elastic constitutive relations of this material. Elastic stiffness is in agreement both with prior experimental nanoindentation measurements and finite element calculations that include the effects of waviness of the reinforcing CNT 'fibers'.
AB - The theoretical elastic properties of aligned carbon nanotube polymer nanocomposites (A-PNCs) have been predicted by standard composite theory, however, a complete experimental characterization of their (presumed) transversally isotropic properties has not been presented to date. High volume fraction A-PNCs are fabricated by biaxial mechanical densification of the CNTs, followed by polymer infiltration via capillarity-assisted wetting using an aerospace-grade epoxy. Because of the dimensions of the samples (~1mm3), only bulk compression or nanomechanical tests have been attempted previously. Here, optical strain mapping is used in conjunction with simple mechanical loadings (here simple uniaxial dogbone specimens) in order to characterize the linear elastic constitutive relations of this material. Elastic stiffness is in agreement both with prior experimental nanoindentation measurements and finite element calculations that include the effects of waviness of the reinforcing CNT 'fibers'.
UR - http://www.scopus.com/inward/record.url?scp=84881391713&partnerID=8YFLogxK
M3 - Conference contribution
AN - SCOPUS:84881391713
SN - 9781600869372
T3 - 53rd AIAA/ASME/ASCE/AHS/ASC Structures, Structural Dynamics and Materials Conference 2012
BT - 53rd AIAA/ASME/ASCE/AHS/ASC Structures, Structural Dynamics and Materials Conference 2012
T2 - 53rd AIAA/ASME/ASCE/AHS/ASC Structures, Structural Dynamics and Materials Conference 2012
Y2 - 23 April 2012 through 26 April 2012
ER -