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Research Papers

Electromagnetic Shielding Effectiveness of a Hybrid Carbon Nanotube/Glass Fiber Reinforced Polymer Composite

[+] Author and Article Information
Ayoub Y. Boroujeni

Department of Biomedical
Engineering and Mechanics,
Virginia Tech,
Blacksburg, VA 24061
e-mail: yari@vt.edu

Mehran Tehrani

Department of Mechanical Engineering,
University of New Mexico,
Albuquerque, NM 87131
e-mail: mtehrani@unm.edu

Majid Manteghi

Bradley Department of Electrical and
Computer Engineering,
Virginia Tech,
Blacksburg, VA 24061
e-mail: manteghi@vt.edu

Zhixian Zhou

Department of Physics
and Astronomy,
Wayne State University,
Detroit, MI 48201
e-mail: zxzhou@wayne.edu

Marwan Al-Haik

ASME Fellow
Department of Aerospace Engineering,
Embry-Riddle Aeronautical University,
Daytona Beach, FL 32114
e-mail: alhaikm@erau.edu

1Corresponding author.

Contributed by the Materials Division of ASME for publication in the JOURNAL OF ENGINEERING MATERIALS AND TECHNOLOGY. Manuscript received July 15, 2014; final manuscript received April 21, 2016; published online June 13, 2016. Assoc. Editor: Harley Johnson.

J. Eng. Mater. Technol 138(4), 041001 (Jun 13, 2016) (6 pages) Paper No: MATS-14-1142; doi: 10.1115/1.4033576 History: Received July 15, 2014; Revised April 21, 2016

A relatively low-temperature carbon nanotube (CNT) synthesis technique, graphitic structure by design (GSD), was utilized to grow CNTs over glass fibers. Composite laminates based on the hybrid CNTs–glass fibers were fabricated and examined for their electromagnetic interfering (EMI) shielding effectiveness (SE), in-plane and out-of-plane electrical conductivities and mechanical properties. Despite degrading the strength and strain-to-failure, improvements in the elastic modulus, electrical conductivities, and EMI SE of the glass fiber reinforced polymer (GFRP) composites were observed.

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References

Figures

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Fig. 1

Schematic diagram of the electromagnetic SE measurements setup

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Fig. 2

SEM micrographs of MWCNTs grown via GSD method over glass fibers at different magnifications

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Fig. 3

Raman spectra of the different processed glass fibers specimens based on: glass fiber as is (raw), SiO2 and nickel sputter-coated fabric (Sp), SiO2 and nickel sputter-coated and heat-treated fabric not exposed to the hydrocarbon gas (Sp + HT), and sample with MWCNTs grown on the surface via graphitic structures by design (GSD)

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Fig. 4

Electromagnetic SE in two frequency ranges for the glass fibers specimens based on: glass fiber as is (raw), SiO2 and nickel sputter-coated and heat-treated fabric not exposed to the hydrocarbon gas (Sp + HT), and sample with MWCNTs grown on the surface via GSD

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Fig. 5

In-plane electrical resistance versus the specimen length for the hybrid GFRP–CNT composites

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Fig. 6

Through thickness electrical resistance versus the specimen length for the hybrid GFRP–CNT composites

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Fig. 7

Representative stress versus strain curves for the GFRPs based on: glass fiber as is (raw), SiO2 and nickel sputter-coated fabric (Sp), SiO2 and nickel sputter-coated and heat-treated fabric not exposed to the hydrocarbon gas (Sp + HT), and sample with MWCNTs grown on the surface via GSD

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Fig. 8

Tensile mechanical properties of the GFRPs based on: glass fiber as is (raw), SiO2 and nickel sputter-coated fabric (Sp), SiO2 and nickel sputter-coated and heat-treated fabric not exposed to the hydrocarbon gas (Sp + HT), and sample with MWCNTs grown on the surface via GSD

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