Issue 29

G. Carta et alii, Frattura ed Integrità Strutturale, 29 (2014) 28-36; DOI: 10.3221/IGF-ESIS.29.04 30 Figure 2 : (a)-(e) Eigenfrequencies of cracked solids with different lengths and different boundary conditions, sketched at the top-right corner of each figure; (f) dispersion curves (black dots) and pass-bands (grey lines) for the solid with infinite length. (a) (b) (c) (d) (e) (f) n k l n n n n ϕ ϕ ϕ ϕ ϕ ϕ