Case scenarios | Crack | Frequency(Hz) | |||
depth (mm) | Location (Sensor No.) | Mode 1 | Mode 2 | Mode 3 | |
I II III | 3.0 1.5 0.5 | 3~4 3~4 3~4 | 50.50 50.75 50.50 | 153.00 155.75 157.25 | 323.75 319.25 322.50 |