Issue 59

M. Seguini et al, Frattura ed Integrità Strutturale, 59 (2022) 18-34; DOI: 10.3221/IGF-ESIS.59.02

Mode

FEM

Experimental

Error (%)

1

212.13

211.33

0.0038

2

578.7

578.52

0.00031

3

1117.9

1121.7

0.0033

4

1813.4

1821.1

0.0042

Table 6: Measured frequencies of uncracked beam II.

Mode

FEM

Experimental

Error (%)

1

210.66

209.53

0.0054

2

578.69

577.50

0.0020

3

1112

1114.4

0.0021

4

1812.7

1817.7

0.0027

Table 7: Measured frequencies of cracked beam II (4 mm).

Figure 9: Natural frequencies (mode 1): (a) Cracked beam with 10mm of depth; (b) Cracked beam with 24 mm of depth; (c) Cracked beam with 36 mm of depth and (d) Cracked beam with 39 mm of depth.

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