Issue 29

G. Carta et alii, Frattura ed Integrità Strutturale, 29 (2014) 28-36; DOI: 10.3221/IGF-ESIS.29.04

cracked - l / h = 5

undamaged - l / h = 5

ϕ

ϕ

(a)

(b)

kl

kl

cracked - l / h = 10

undamaged - l / h = 10

ϕ

ϕ

(d)

(c)

kl

kl

undamaged - l / h = 20

cracked - l / h = 20

ϕ

ϕ

(e)

(f)

kl

kl

Figure 5 : Theoretical (solid lines) and numerical (dots) dispersion curves for cracked and undamaged solids with l = 1.5 m ( (a) , (b) ), l = 3 m ( (c) , (d) ) and l = 6 m ( (e) , (f) ). The other quantities have the following values: h = 0.3 m, s = 0.1 m, b = 0.5 m, E = 31 GPa, ν = 0.2, ρ = 2500 kg/m 3 .

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