PSI - Issue 37

Koji Uenishi et al. / Procedia Structural Integrity 37 (2022) 397–403 Uenishi and Nagasawa / Structural Integrity Procedia 00 (2022) 000 – 000

401 5

a

Tensile loading

bcccc

10 mm

Main fracture (so far quasi-static)

0  s

120  s

Merged

20  s

140  s

40  s

160  s

Secondary fractures (dynamic)

Arrest of the main fracture

60  s

180  s

Branching

80  s

200  s

100  s

220  s

Fig. 3. Fractures, developing quasi-statically and then dynamically, in a specimen with multiple small-scale slightly inclined but parallel cracks under uniaxial tension. The constant strain rate of the external loading is 1.2  10 − 2 /s for all experiments shown in Figs. 2, 3 and 4 [unit: mm].