표 2. | Table 2. 강섬유의 구조적 파라미터에 따른 차폐효과 및 공진 주파수 | Shielding effectiveness and resonance frequency in terms of structural parameters of steel fiber.

Category		Shielding effectiveness (@ Peak)	Resonance frequency (@ Peak)
Orientation (Angle)	0°	≅ 13.26 dB	≅ 2.6 GHz
	30°	≅ 12.28 dB	≅ 2.6 GHz
	45°	≅ 11.53 dB	≅ 2.6 GHz
	60°	≅ 10.85 dB	≅ 2.6 GHz
Number	15 (0.01 %)	≅ 117.3 dB	≅ 2.6 GHz
	15 (0.02 %)	≅ 123.3 dB	≅ 2.6 GHz
	30 (0.01 %)	≅ 59.54 dB	≅ 2.6 GHz
	30 (0.02 %)	≅ 62.39 dB	≅ 2.6 GHz
Length	∞ mm	≻ 25 dB	≅ 0 GHz
	19.5 mm	≅ 13.26 dB	≅ 2.6 GHz
	9.75 mm	≅ 12.31 dB	≅ 5 GHz