Issue 58

R. Capozucca et alii, Frattura ed Integrità Strutturale, 58 (2021) 386-401; DOI: 10.3221/IGF-ESIS.58.28

10 12 14 16 18 20

Load P [kN]

D1 D2 D3

0 2 4 6 8

0

2

4

6

8

10

12

deflection [mm]

Figure 10: Load-Deflection diagrams for the first three damage level on un-strengthened RC beam B2.

Figure 11: Average frequency values obtained for B2 without strengthening.

Figure 12: Crack pattern at damage level D4 for beam B2 with NSM GFRP rod.

Figure 13: Average frequency values obtained for B2 with NSM GFRP rod strengthening.

For each damage levels, modal testing gives the Frequency Response Functions (FRFs). In Fig. 14, it can be seen the overlap of all FRFs obtain for each state of damage.

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