Three-dimensional elastic constitutive relations of aligned carbon nanotube architectures

Daniel Handlin; Itai Y. Stein; Roberto Guzman De Villoria; Hülya Cebeci; Ethan M. Parsons; Simona Socrate; Stephen Scotti; Brian L. Wardle

doi:10.1063/1.4842117

Three-dimensional elastic constitutive relations of aligned carbon nanotube architectures

Daniel Handlin, Itai Y. Stein, Roberto Guzman De Villoria, Hülya Cebeci, Ethan M. Parsons, Simona Socrate, Stephen Scotti, Brian L. Wardle

Department of Aeronautical Engineering

Research output: Contribution to journal › Article › peer-review

32 Citations (Scopus)

Abstract

Tailorable anisotropic intrinsic and scale-dependent properties of carbon nanotubes (CNTs) make them attractive elements in next-generation advanced materials. However, in order to model and predict the behavior of CNTs in macroscopic architectures, mechanical constitutive relations must be evaluated. This study presents the full stiffness tensor for aligned CNT-reinforced polymers as a function of the CNT packing (up to ∼20 vol. %), revealing noticeable anisotropy. Finite element models reveal that the usually neglected CNT waviness dictates the degree of anisotropy and packing dependence of the mechanical behavior, rather than any of the usually cited aggregation or polymer interphase mechanisms. Combined with extensive morphology characterization, this work enables the evaluation of structure-property relations for such materials, enabling design of aligned CNT material architectures.

Original language	English
Article number	224310
Journal	Journal of Applied Physics
Volume	114
Issue number	22
DOIs	https://doi.org/10.1063/1.4842117
Publication status	Published - 14 Dec 2013

Funding

This work was supported by Boeing, EADS, Embraer, Lockheed Martin, Saab AB, Composite Systems Technology, Hexcel, and TohoTenax through MIT's Nano-Engineered Composite aerospace STructures (NECST) Consortium and was supported (in part) by the U.S. Army Research Office under contract W911NF-07-D-0004 and W911NF-13-D-0001. D.H. was supported by NASA Space Technology Research Fellowship Grant No. NNX11AN79H. I.Y.S. was supported by the National Science Foundation under Grant No. CMMI-1130437. The authors thank Marcel Williams (MIT), Silvia Chan (MIT, Univ. of Pennsylvania), and Kosuke Takahashi (MIT, UCLA) for early experimental contributions to this work, and Sunny Wicks (MIT), Richard Li (MIT), John Kane (MIT), and the entire necstlab at MIT for technical support and advice. This work was supported (in part) by the U.S. Army Research Office under contract W911NF-13-D-0001, made use of the MIT MRSEC Shared Experimental Facilities supported by the National Science Foundation under Award No. DMR-0819762, utilized the core facilities at the Institute for Soldier Nanotechnologies at MIT, supported in part by the U.S. Army Research Office under contract W911NF-07-D-0004 and was carried out in part through the use of MIT's Microsystems Technology Laboratories.

Funders	Funder number
TohoTenax
National Science Foundation	DMR-0819762, CMMI-1130437
Boeing
National Aeronautics and Space Administration	NNX11AN79H
Army Research Office	W911NF-13-D-0001, W911NF-07-D-0004

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Three-dimensional elastic constitutive relations of aligned carbon nanotube architectures

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