Research Article

A Novel Planar Differential Koch Fractal Eddy Current Probe with Parallel Wound Topological Structure

Table 1

of the real part and imaginary part for the different length defect detection.

Defect length (mm)Real part (V)Imaginary part (V)Absolute (V)
CircleKoch AKoch CircleKoch AKoch CircleKoch AKoch

200.4230.2990.2700.1900.2590.1890.2380.2090.168
150.4590.3500.3080.2150.3370.2330.2460.2540.190
100.3590.3010.3030.2110.3240.2500.2050.2270.189
50.1440.1140.0980.0810.2590.0860.0880.1500.066
30.0450.0410.0210.0530.0910.0180.0290.0560.014
10.0290.0250.0230.0480.0500.0100.0150.0310.011