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Published June 2, 2014 | Published
Journal Article Open

Effect of fluid medium on mechanical behavior of carbon nanotube foam


This study reports the constitutive response and energy absorption capabilities of fluid-impregnated carbon nanotube (CNT) foams under compressive loading as a function of fluid viscosity and loading rates. At all strain rates tested, we observe two characteristic regimes: below a critical value, increasing fluid viscosity increases the load bearing and energy absorption capacities; after a critical value of the fluid's viscosity, we observe a rapid decrease in the systems' mechanical performance. For a given fluid viscosity, the load bearing capacity of the structure slightly decreases with strain rate. A phenomenological model, accounting for fluid-CNT interaction, is developed to explain the observed mechanical behavior.

Additional Information

© 2014 AIP Publishing LLC. Received 7 November 2013; accepted 26 May 2014; published online 6 June 2014. This work was partially supported by the Institute for Collaborative Biotechnologies, under Contract No. W911NF-09-D-0001 with the Army Research Office.

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