Research Article

Structural Health Monitoring of Precast Concrete Box Girders Using Selected Vibration-Based Damage Detection Methods

Figure 13

Changes in the first three flexural mode shapes caused by numerical damage case 24, located 3.50 m from the support, calculated using (a) 7 and (b) 15 simulated measurement points.
280685.fig.0013a
(a) 7 pts
280685.fig.0013b
(b) 15 pts