A Corrosion Detection Method for Steel Strands Based on LC Electromagnetic Resonance

Table 3

Test data of the first group of steel strands.

True rust rate (%)			Average true rust rate (%)	Resonant frequency (kHz)			Average frequency (kHz)
Steel strands 1	Steel strands 2	Steel strands 3		Steel strands 1	Steel strands 2	Steel strands 3
0	0	0	0	371.234	370.263	368.959	370.152
2.06	2.11	2.13	2.1	371.124	372.532	371.129	371.595
4.01	3.98	4.16	4.05	372.896	373.124	373.091	373.037
6.33	6.45	6.42	6.4	375.122	374.864	373.454	374.48
7.92	7.93	7.94	7.93	376.113	376.023	375.633	375.923
10.30	10.37	10.31	10.34	377.210	376.981	377.904	377.365
12.45	12.72	12.63	12.6	378.684	379.022	378.789	378.808