Table 1 Equivalent attenuation coefficient of EC in the test samples of various thicknesses at different frequencies
From: Characteristics of Eddy Current Attenuation and Thickness Measurement of Metallic Plate
Plate thickness (mm) | Equivalent attenuation coefficient \( \tilde{\alpha } \) | |||
|---|---|---|---|---|
1 kHz | 3 kHz | 10 kHz | 30 kHz | |
1 | 0.4995 | 0.5409 | 0.6684 | 1.2400 |
2 | 0.5011 | 0.5886 | 0.9211 | 1.6070 |
3 | 0.5054 | 0.6342 | 1.0080 | 1.6170 |
5 | 0.5191 | 0.6776 | 1.0200 | 1.6180 |
inf. | 0.5283 | 0.6810 | 1.0200 | 1.6180 |