An Experimental Study of the Feasibility of Identifying the Impact Damages of Reinforced Concrete Piers Using a Modal Frequency Method

Figure 17

Fitting curves of the modal frequency damage factors and the ultrasonic velocity damage factors. (a) Fitting curve of Z16-1, (b) fitting curve of Z20-1, (c) fitting curve of Z16-2, (d) fitting curve of Z16-3, and (e) fitting curve of Z20-2.

(a)

(b)

(c)

(d)

(e)