Research Article
Online Structural Health Monitoring of Rotating Machinery via Ultrasonic Guided Waves
Figure 11
Collected signals of stress collection points (a) no. 1, (b) no. 2, (c) no. 3, and (d) no. 4 when the rotor rotates at 15Hz.
(a) |
(b) |
(c) |
(d) |