Prediction of specific electrical resistivity of polymeric composites based on carbon fabrics

Authors

DOI:

https://doi.org/10.15587/1729-4061.2018.129062

Keywords:

composite material, carbon fiber, specific electrical resistivity, finite element method

Abstract

We have proposed an improved approach to forecasting electrical resistivity of composite materials based on carbon fabrics by using a finite element method that takes into consideration a deformation of the reinforcing material during molding. Electrical characteristics of homogenized reinforcing fibers are determined by using known dependences for unidirectional composites. Based on the developed approach, we calculated values of electrical resistivity of composite materials based on the carbon fabric of twilled weaving and the weft-knitted carbon fabric. To account for a change in the thickness of the weft-knitted carbon fabric during molding, we simulated its deformation under the action of vacuum pressure. The obtained calculated values of electrical resistivity of the examined materials are in good agreement with the results of experimental study. Divergence between the calculated and experimental results for a material based on the carbon fabric of twilled weaving is 10 %. For materials based on the weft-knitted carbon fabric, divergence is 11 % towards the weft and 32 % in the direction of the base of the fabric.

Given that the volumetric fiber content in a material from the weft-knitted carbon fabric was determined based on the results of modeling its deformation at molding, as well as the results of similar studies, reliability of the simulation can be considered quite satisfactory. The proposed approach could be applied when choosing a rational scheme for weaving a fabric in order to estimate specific resistivity in the absence of information about volumetric fiber content and the actual structure of the material after its fabrication.

Author Biographies

Vadym Stavychenko, National Aerospace University named after M. Zhukovsky "Kharkiv Aviation Institute" Chkalova str., 17, Kharkiv, Ukraine, 61070

PhD

Department of Composite Structures and Aviation Materials

Svitlana Purhina, National Aerospace University named after M. Zhukovsky "Kharkiv Aviation Institute" Chkalova str., 17, Kharkiv, Ukraine, 61070

PhD

Department of Composite Structures and Aviation Materials

Pavlo Shestakov, National Aerospace University named after M. Zhukovsky "Kharkiv Aviation Institute" Chkalova str., 17, Kharkiv, Ukraine, 61070

Student

Department of Composite Structures and Aviation Materials

References

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Published

2018-04-20

How to Cite

Stavychenko, V., Purhina, S., & Shestakov, P. (2018). Prediction of specific electrical resistivity of polymeric composites based on carbon fabrics. Eastern-European Journal of Enterprise Technologies, 2(12 (92), 46–53. https://doi.org/10.15587/1729-4061.2018.129062

Issue

Section

Materials Science