PSI - Issue 18

5

Bruno Atzori et al. / Procedia Structural Integrity 18 (2019) 413–421 Author name / Structural Integrity Procedia 00 (2019) 00 –000

417

Fig. 1. Specimen geometry (r=0.1 mm, 2  =45°, a=18 mm, thickness is 4 mm; dimensions in mm).

1.E+04

J pl. stress = 2785 J/m 2 J pl. strain = 2530 J/m 2

K I =23.29 MPa  m

0.5

1.E+03

 y ,  x [MPa]

1.E+02

sy sx

 y  x

1.E+01

1.E-5

1.E-4

1.E-3 x [m]

1.E-2

1.E-1

Fig. 2. Local stress rise along the crack bisector line and related parameters obtained by finite element analysis.