Research Article

Microwave Structural Health Monitoring of the Grouted Connection of a Monopile-Based Offshore Wind Turbine: Fatigue Testing Using a Scaled Laboratory Demonstrator

Figure 9

Washed-out material (a) on the top and (b) on the bottom of the grouted connection. (a) Being scraped and vacuumed when dry; (b) being scraped while wet and subsequently dried.
(a)
(b)