Analysis of Shielding Effectiveness of Reinforced Concrete Against High-Altitude Electromagnetic Pulse

Hyun, Se Young; Du, Jin Kyoung; Lee, Hee Jo; Lee, Kyungwon; Lee, Jong Hyun; Jung, Chilsung; Kim, Eung Jo; Kim, Waedeuk; Yook, Jong Gwan

doi:10.1109/temc.2014.2322911

Cited by 45 publications

(12 citation statements)

References 18 publications

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“…Rebar spacing 50 mm 100 mm 200 mm 300 mm Maximum  (MHz) 3,000 1,500 1,000 500 (Hyun et al, 2014 (Bihua et al, 2000;Dalke et al, 2000).…”

mentioning

confidence: 99%

Evaluating of Electromagnetic Shielding Characteristics of Reinforced Concrete Using Reinforcing Details

Choi¹,

Yuan²,

Hong³

et al. 2020

J. Korean Soc. Hazard Mitig

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In this study, experimental tests were performed to determine the electromagnetic shielding characteristics of reinforced concrete based on the thickness of concrete and rebar. In addition, the electromagnetic shielding characteristics based on the steel-fiber volume ratio and rebar spacing of fiber-reinforced concrete were evaluated. Concrete showed significant Shielding Effectiveness (SE) in a high-frequency band with increasing thickness, but the rebar exhibited significant SE in the low-frequency band with increasing diameter, decreasing rebar spacing, and increasing layer. The SE increased with the steel fiber volume ratio, and it also increased owing to the decrease in the rebar spacing for 1.5 vol.% steel fibers.

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“…Rebar spacing 50 mm 100 mm 200 mm 300 mm Maximum  (MHz) 3,000 1,500 1,000 500 (Hyun et al, 2014 (Bihua et al, 2000;Dalke et al, 2000).…”

mentioning

confidence: 99%

Evaluating of Electromagnetic Shielding Characteristics of Reinforced Concrete Using Reinforcing Details

Choi¹,

Yuan²,

Hong³

et al. 2020

J. Korean Soc. Hazard Mitig

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“…Special attention has been given to reinforced concrete, a composite material that is widely used in modern constructions. It has been demonstrated that the grid-like shield formed by the reinforcing steel bars (rebars) embedded in concrete increases the through-wall attenuation of signals in the building [8]- [11] and enhances its shielding effectiveness against both High-Altitude Electromagnetic Pulse (HEMP) [12] and lightning electromagnetic fields [13]- [19].…”

Section: Introductionmentioning

confidence: 99%

Lightning-Induced Magnetic Fields Inside Grid-Like Shields: An Improved Formula Complemented by a Polynomial Chaos Expansion

Naranjo-Villamil

Guiffaut

Gazave

et al. 2021

IEEE Trans. Electromagn. Compat.

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“…Therefore, an electronic attack can affect the equipment in the electronic protection facilities, and various studies are being conducted to reduce them. To date, these facilities have added thicker barriers or shielding filters to meet the internal shielding standards [7]. High costs and space are required to make a shielding facility with a high shielding effect using this method.…”

Section: Introductionmentioning

confidence: 99%

Improved Active Interference Canceling Algorithms for Real-Time Protection of 2nd/3rd Level Facilities in Electronic Warfare Environment

et al. 2020

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In an electronic warfare environment, important equipment or facilities of the friendlies are placed in protective facilities to protect against external Electronic Attacks (EA). No matter how well shielded the facility is, some external electromagnetic waves may penetrate through various paths such as power lines or fans, and the electromagnetic waves may be fatal to certain devices due to the structural resonance of the protective facilities. This paper introduced a real-time electromagnetic canceling technique that removes the resonance field inside the protection facility caused by the intended electronic attack from the enemy. The method makes it possible to cancel the process much faster than the conventional ones that have applied the Matrix Pencil Method (MPM). This is because the internal resonant field can be predicted in a closed-form under the assumption that the external electromagnetic wave is a complex exponential function. Longer exposure to Intended Electromagnetic Interference (IEMI) could be fatal for some devices. Therefore, it is imperative to attenuate the noise within a short time, and a method of reducing internal noise in real-time is beneficial for Electronic Protection (EP). The proposed method could be applied as a new technique to protect important protection facilities, rather than the more traditional method called wrapping using the Faraday cage effect.

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Analysis of Shielding Effectiveness of Reinforced Concrete Against High-Altitude Electromagnetic Pulse

Cited by 45 publications

References 18 publications

Evaluating of Electromagnetic Shielding Characteristics of Reinforced Concrete Using Reinforcing Details

Evaluating of Electromagnetic Shielding Characteristics of Reinforced Concrete Using Reinforcing Details

Lightning-Induced Magnetic Fields Inside Grid-Like Shields: An Improved Formula Complemented by a Polynomial Chaos Expansion

Improved Active Interference Canceling Algorithms for Real-Time Protection of 2nd/3rd Level Facilities in Electronic Warfare Environment

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