Effectiveness of Low-Cost Electromagnetic Shielding Using Nail-Together Galvanized Steel: Test Results.
CONSTRUCTION ENGINEERING RESEARCH LAB (ARMY) CHAMPAIGN IL ENGINEERING AND MATERIALS DIV
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The sensitivity of modem electronic equipment has increased the need for costly electromagnetic shielding. To reduce this cost, the U.S. Army Construction Engineering Research Laboratories USACERL has developed a new concept for shielding design that uses 28-gauge galvanized steel and standard galvanized nails. In this study, an electromagnetically shielded structure using the concept was designed, built, and evaluated for shielding effectiveness. The galvanized material was mounted to the standard USACERL test aperture and nailed to the wooden module frame, and the shielding effectiveness of the new construction design was measured using radio frequency antennas and receivers. Evaluations showed that the nail-together structure proved adequate for many shielding applications. However, while the galvanized steel met most shielding application requirements, this process added multiple seams to the structure, which decreased shielding in many instances by as much as 40 dB. Electromagnetic shielding, Electromagnetic pulse C3I Facilities.
- Electromagnetic Shielding