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http://dx.doi.org/10.7234/composres.2021.34.6.412

Evaluation of the Effect of Nickel Powder on the Piezoresistivity Behavior of Carbon-Fiber/Rubber Composites  

Lim, Dong-Jin (Korea Vehicle & Ind. Co., Ltd.)
Publication Information
Composites Research / v.34, no.6, 2021 , pp. 412-420 More about this Journal
Abstract
In this study, we measure the initial electrical conductivity of SCF/rubber specimens and SCF/rubber specimens with nickel particles respectively. The corresponding electrical conductivity with compressive strain on the specimens is also measured. Through this experiment, we observed the effects of the volume fraction of carbon fiber, nickel particles and external strain on the electrical conductivity. Experiments show that even a small difference in the volume fraction of SCF plays a major role in the change of the electrical conductivity and that the piezoresistivity increases due to fiber reorientation respond to external strain. In addition, the nickel particles contribute to improving the electrical conductivity in specimens with carbon fibers above the threshold volume fraction. It was confirmed that there is an effect of offsetting the increment in the piezoresistivity caused by the reorientation of carbon fibers according to external strain.
Keywords
Piezoresistivity; Percolation model; Short carbon fiber(SCF); Carbon fiber-nickel powder/rubber matrix composite;
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Times Cited By KSCI : 1  (Citation Analysis)
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