Issue 22

S. Bennati et alii, Frattura ed Integrità Strutturale, 22 (2012) 39-55 ; DOI: 10.3221/IGF-ESIS.22.06 52 a) b) c) Figure 12 : Axial force N ( z ): a) stage 1: 0 M M  ; b) stage 2: 0.9 u M M  ; c) stage 3: 1.01 u M M  . Figure 13 Length of damaged region c as a function of the length, a, of the region lacking reinforcement.