American Society of Civil Engineers


Study of Metal Foams for Architectural Electromagnetic Shielding


by Lin Biao Wang, (corresponding author), (Associate Professor, School of Electrical and Electronic Engineering, Nanyang Technological Univ., 50 Nanyang Ave., S639798, Singapore. E-mail: ekysee@ntu.edu.sg), Kye Yak See, (Postgraduate Student, School of Electrical and Electronic Engineering, Nanyang Technological Univ., 50 Nanyang Ave., S639798, Singapore. E-mail: N050066@ntu.edu.sg), Yong Ling, (Adjunct Associate Professor, School of Electrical and Electronic Engineering, Nanyang Technological Univ., 50 Nanyang Ave., S639798, Singapore. E-mail: ewjkoh@ntu.edu.sg), and Wee Jin Koh, (Postgraduate Student, School of Electrical and Electronic Engineering, Nanyang Technological Univ., 50 Nanyang Ave., S639798, Singapore. E-mail: wang0474@e.ntu.edu.sg)

Journal of Materials in Civil Engineering, Vol. 24, No. 4, April 2012, pp. 488-493, (doi:  http://dx.doi.org/10.1061/(ASCE)MT.1943-5533.0000403)

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Document type: Case Studies
Abstract: Porous metals have been used widely in aerospace and automobile industries due to their lightweight and reasonable mechanical properties. However, little research and experimental study has been carried out to explore the feasibility of extending porous metals in large-scale electromagnetic (EM) shielding applications. This paper begins with the EM modeling of the shielding effectiveness (SE) of common types of metal foams, and then the simulated results are validated experimentally. Finally, a shielded room is assembled and installed with modular metal foam panels. The SE of the installed shielded room is measured from 1–8 GHz, and promising shielding performance is demonstrated. With the comprehensive study, metal foam has been demonstrated to be an attractive option for large-scale architectural EM shielding applications without imposing structural loading issues.


ASCE Subject Headings:
Aluminum (material)
Foam
Finite element method
Measurement
Mechanical properties
Porous media

Author Keywords:
Aluminum foam
Electromagnetic shielding
Finite-element analysis
Shielding effectiveness measurement