Research Article
A Modified Time Reversal Method for Guided Wave Detection of Bolt Loosening in Simulated Thermal Protection System Panels
Figure 9
The predictive variables at different bolt loosening cases: (a) results of bracket 1, (b) results of bracket 2, (c) results of bracket 3, and (d) results of bracket 4.
(a) |
(b) |
(c) |
(d) |