On the electromagnetic shielding properties of carbon fiber materials
Introduction. Due to the good electrical and thermal properties of carbon, carbon-based materials represent a major trend is various applications, including electromagnetic compatibility. Among carbon-based materials, graphite-impregnated woven fabrics represent a new trend in the field of electroma...
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| Format: | Article |
| Language: | English |
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National Technical University "Kharkiv Polytechnic Institute"
2022-02-01
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| Series: | Electrical engineering & Electromechanics |
| Subjects: | |
| Online Access: | http://eie.khpi.edu.ua/article/view/243577/250276 |
| _version_ | 1818293717434368000 |
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| author | G. Rosu V. Velicu A. Boitan G. Mihai L. Tuta O. Baltag |
| author_facet | G. Rosu V. Velicu A. Boitan G. Mihai L. Tuta O. Baltag |
| author_sort | G. Rosu |
| collection | DOAJ |
| description | Introduction. Due to the good electrical and thermal properties of carbon, carbon-based materials represent a major trend is various applications, including electromagnetic compatibility. Among carbon-based materials, graphite-impregnated woven fabrics represent a new trend in the field of electromagnetic shielding, with the perspective of being used for protective clothing. The novelty of the proposed work consists in the exhaustive comparative analysis of various carbon-based sample shields by employing both simulation and experimental methods. The selected configurations included a simple graphite plate, a graphite powder strip network, and a graphite-impregnated fabric with 2´2 twill weave. Purpose. The main scope of the analysis is to prove the efficiency of the graphite-impregnated twill woven fabric in the field of electromagnetic shielding. Methods. Two main research methods were employed: simulation and experiment, both following the same protocol: the shield placed in the middle, with the excitation (transmitting antenna) on one side and the measurement / receiving antenna on the other. The experimental stage was thorough, being performed in two different laboratories and by applying the double transverse electromagnetic (TEM) cell method and the shielded box method. Results. A significant difference yielded from the comparison of the simulation and experimental results for the shielding effectiveness, probably due to the fact that the virtual model is an idealized version of the physical one, not taking into account its imperfections. The virtual analysis yielded the graphite plate shield as the most efficient, followed closely by the twill fabric. The graphite strip network had significantly poorer performance compared to the other two shields, probably due to the electrical contact imperfections between the graphite strips and the optical transparency of the shield. The main focus of the analysis was the twill woven graphite-impregnated fabric; therefore, its shielding effectiveness was determined through simulation and experiment. The experimental analysis was performed in two stages in two different electromagnetic compatibility laboratories, by employing the double TEM cell method and the shielded box method, respectively, both methods providing similar results and classifying the shielding performance as good. Practical value. The paper provides an accurate analysis of the graphite-impregnated 2´2 twill woven fabric in terms of electromagnetic shielding effectiveness, by employing both simulation and experimental methods, and comparing its performance to the one other graphite-based shields. |
| first_indexed | 2024-12-13T03:20:17Z |
| format | Article |
| id | doaj.art-120455604cc247d7bde7824feea4760f |
| institution | Directory Open Access Journal |
| issn | 2074-272X 2309-3404 |
| language | English |
| last_indexed | 2024-12-13T03:20:17Z |
| publishDate | 2022-02-01 |
| publisher | National Technical University "Kharkiv Polytechnic Institute" |
| record_format | Article |
| series | Electrical engineering & Electromechanics |
| spelling | doaj.art-120455604cc247d7bde7824feea4760f2022-12-22T00:01:22ZengNational Technical University "Kharkiv Polytechnic Institute"Electrical engineering & Electromechanics2074-272X2309-34042022-02-011384310.20998/2074-272X.2022.1.05On the electromagnetic shielding properties of carbon fiber materialsG. Rosu0https://orcid.org/0000-0002-2772-6210V. Velicu1https://orcid.org/0000-0002-7138-6719A. Boitan2https://orcid.org/0000-0002-9974-4864G. Mihai3https://orcid.org/0000-0003-0131-4776L. Tuta4https://orcid.org/0000-0002-5686-0718O. Baltag5https://orcid.org/0000-0001-8277-4947«Ferdinand I» Military Technical Academy, RomaniaSpecial Telecommunications Service, RomaniaSpecial Telecommunications Service, RomaniaNational Authority for Management and Regulation in Communications of Romania (ANCOM), Romania«Ferdinand I» Military Technical Academy, RomaniaGrigore T. Popa University Medicine and Pharmacy of Iasi, RomaniaIntroduction. Due to the good electrical and thermal properties of carbon, carbon-based materials represent a major trend is various applications, including electromagnetic compatibility. Among carbon-based materials, graphite-impregnated woven fabrics represent a new trend in the field of electromagnetic shielding, with the perspective of being used for protective clothing. The novelty of the proposed work consists in the exhaustive comparative analysis of various carbon-based sample shields by employing both simulation and experimental methods. The selected configurations included a simple graphite plate, a graphite powder strip network, and a graphite-impregnated fabric with 2´2 twill weave. Purpose. The main scope of the analysis is to prove the efficiency of the graphite-impregnated twill woven fabric in the field of electromagnetic shielding. Methods. Two main research methods were employed: simulation and experiment, both following the same protocol: the shield placed in the middle, with the excitation (transmitting antenna) on one side and the measurement / receiving antenna on the other. The experimental stage was thorough, being performed in two different laboratories and by applying the double transverse electromagnetic (TEM) cell method and the shielded box method. Results. A significant difference yielded from the comparison of the simulation and experimental results for the shielding effectiveness, probably due to the fact that the virtual model is an idealized version of the physical one, not taking into account its imperfections. The virtual analysis yielded the graphite plate shield as the most efficient, followed closely by the twill fabric. The graphite strip network had significantly poorer performance compared to the other two shields, probably due to the electrical contact imperfections between the graphite strips and the optical transparency of the shield. The main focus of the analysis was the twill woven graphite-impregnated fabric; therefore, its shielding effectiveness was determined through simulation and experiment. The experimental analysis was performed in two stages in two different electromagnetic compatibility laboratories, by employing the double TEM cell method and the shielded box method, respectively, both methods providing similar results and classifying the shielding performance as good. Practical value. The paper provides an accurate analysis of the graphite-impregnated 2´2 twill woven fabric in terms of electromagnetic shielding effectiveness, by employing both simulation and experimental methods, and comparing its performance to the one other graphite-based shields.http://eie.khpi.edu.ua/article/view/243577/250276carbon fiberdouble tem cellelectromagnetic shieldinggraphiteshielded box methodshielding effectiveness |
| spellingShingle | G. Rosu V. Velicu A. Boitan G. Mihai L. Tuta O. Baltag On the electromagnetic shielding properties of carbon fiber materials Electrical engineering & Electromechanics carbon fiber double tem cell electromagnetic shielding graphite shielded box method shielding effectiveness |
| title | On the electromagnetic shielding properties of carbon fiber materials |
| title_full | On the electromagnetic shielding properties of carbon fiber materials |
| title_fullStr | On the electromagnetic shielding properties of carbon fiber materials |
| title_full_unstemmed | On the electromagnetic shielding properties of carbon fiber materials |
| title_short | On the electromagnetic shielding properties of carbon fiber materials |
| title_sort | on the electromagnetic shielding properties of carbon fiber materials |
| topic | carbon fiber double tem cell electromagnetic shielding graphite shielded box method shielding effectiveness |
| url | http://eie.khpi.edu.ua/article/view/243577/250276 |
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