The researchers assumed the non-straight form of carbon nanotube as a random parameter in their modeling and took into account all possible formations during the process of producing the nanocomposite,
Results of the research can be used in industries such as aerospace, automobile manufacturing, transportation and energy because all these industries enjoy the advantages of polymeric composites.
The aim of this research was to estimate the mechanical properties of a nanocomposite containing multi-walled carbon nanotube. In this part of the research, the focus was on the effect of non-straight form of the nanotube in resin bed.
The purpose was to study the effect of carbon nanotube in resin on the mechanical properties. In previous researches, either the nanotube was assumed to be completely straight, or the non-straight form was assumed to have a specific shape. In this research, the nanotube was assumed to have an unknown shape.
It turned out that the non-straight form of carbon nanotube is the most effective parameter in the drop of mechanical properties in the nanocomposite containing carbon nanotube compared to other parameters. Non-straight form of carbon nanotube reduces the nanocomposite properties by 25-50 percent compared to ideal condition.
The decrease in properties becomes larger in higher volume ratios. It was also noted that the non-straight form has less effect on resins with higher elastic modules.
Results also showed that the non-straight form of carbon nanotube slightly increased Poisson's ratio in the material environment. The non-linear trend and dependency of the nanocomposite modules on the volume of nanotube confirmed that there was no simple micromechanical correlations to predict mechanical properties of nanocomposites.
Poisson's ratio, named after SimÉon Poisson, is the negative ratio of transverse to axial strain. When a material is compressed in one direction, it usually tends to expand in the other two directions perpendicular to the direction of compression.
Results of the research have been published in Composite Structures, vol. 97, pp. 304-309.
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