Study on the Measurement Method of the Crack Local Flexibility of the Beam Structure

Figure 6

Measurement results of the local flexibility of crack. (a) Condition I (b) Condition II. (c) Condition III. (d) Condition IV. 1: the first order natural frequency influence curve. 2: the second order natural frequency influence curve. 3: the third order natural frequency influence curve.

(a)

(b)

(c)

(d)