Evaluation and modeling of the mechanical properties of graphite nanoplatelets based rubber nanocomposites for pressure sensing applications |
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| Authors: | Waleed E. Mahmoud A. A. Al‐Ghamdi Falleh R. Al‐Solamy |
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| Affiliation: | 1. Physics department, Faculty of science, King Abdulaziz University, Jeddah, Saudi Arabia;2. Mathematics department, Faculty of science, Tabuk University, Tabuk, Saudi Arabia |
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| Abstract: | Acrylonitrile butadiene rubber (NBR) compounds filled with different concentrations of graphite nanoplatelets were experimentally investigated. The stress–strain curves of the nanocomposites were studied, which suggest good filler–matrix adhesion. The large reinforcement effect of the filler followed the Guth model for non‐spherical particles. The effect of graphite nanoplatelets on the cyclic fatigue and hysteresis was also examined. The loading and unloading stress–strain relationships for any cycle were described by applying Ogden's model for rubber nanocomposites. With this model for incompressible materials, expressions may be developed to predict the stress–strain relationship for any given cycle. The dissipated energy increased with graphite nanoplatelets concentrations and decrease with number of cycles. The rate of damage accumulation becomes marginal after first ten cycles. The rate of damage increases as the amount of graphite nanoplatelets increase into the rubber matrix. Copyright © 2011 John Wiley & Sons, Ltd. |
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| Keywords: | graphite nanoplatelets compressive stress– strain dissipation energy Ogden model |
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