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) | Circle | Koch A | Koch | Circle | Koch A | Koch | Circle | Koch A | Koch |
| 20 | 0.423 | 0.299 | 0.270 | 0.190 | 0.259 | 0.189 | 0.238 | 0.209 | 0.168 | 15 | 0.459 | 0.350 | 0.308 | 0.215 | 0.337 | 0.233 | 0.246 | 0.254 | 0.190 | 10 | 0.359 | 0.301 | 0.303 | 0.211 | 0.324 | 0.250 | 0.205 | 0.227 | 0.189 | 5 | 0.144 | 0.114 | 0.098 | 0.081 | 0.259 | 0.086 | 0.088 | 0.150 | 0.066 | 3 | 0.045 | 0.041 | 0.021 | 0.053 | 0.091 | 0.018 | 0.029 | 0.056 | 0.014 | 1 | 0.029 | 0.025 | 0.023 | 0.048 | 0.050 | 0.010 | 0.015 | 0.031 | 0.011 |
|
|