Research Article
Ultrasonic Total Focusing Imaging Method of Multilayer Composite Structures Using the Root-Mean-Square (RMS) Velocity
Figure 7
Focused imaging of model 1: (a) ML-TFM; (b) ML-SFM-1 (in equation (
4),
); (c) ML-SFM-2 (in equation (
4),
); (d) TML-TFM.
