Issue 50

I. Dakanali et alii, Frattura ed Integrità Strutturale, 50 (2019) 370-382; DOI: 10.3221/IGF-ESIS.50.31 374 Figure 5: Acoustic sensors around the specimen (2 nd class). 4 Figure 6: (a); (c); (e) The time variation of the load for the 3 different classes of tests; (b); (d); (g) the specimens after the test; (f) the specimen before the test (3 rd class). 3 6 5 3 5 1 2 4 Dimensions in mm 7 (a) (b) (c) (d) (e) (b) (a) (e) (c) (g) 3 rd class 2 nd class (d) (f) 1 st class