Modified and Simplified Sectional Flexibility of a Cracked Beam

Figure 6

Variation of natural frequency ratio with the crack depth of a simply supported beam (𝐿₁/𝐿=0.8): (a) first frequency, (b) second frequency, (c) third frequency, (d) fourth frequency, and (e) fifth frequency.

(a)

(b)

(c)

(d)

(e)