PSI - Issue 13

F.J. Gómez et al. / Procedia Structural Integrity 13 (2018) 267–272 Author name / Structural Integrity Procedia 00 (2018) 000 – 000

5

271

Table 1. Materials properties and maximum L r values. Material  y (MPa)

K IC (MPa m

0.5 )

L r

f (MPa)



PMMA (Gómez) PC (Nisitani) Acero -196°C (Lee)

43.9

1.04

142 94.5 3291 2709

<0.87 <0.97 <0.66 <0.84 <0.66 <0.87

58

2.2

918 539

46.7

Aluminio (Madrazo) Aluminio (Madrazo)

Al7075-T651-TL

27

Al7075-T651-LT

2727

554

27

Acero S355 -196°C (Madrazo)

853.5

31.3

3865

10

Cohesive model Expression (5)

8

6

IC

R / K

K IC

4

2

0

0.01

0.1

1

10

100

R/l ch

Alumina Alumina + 7% Zr Si 3 N 4

SiC Si policrystalline Si monocrystalline

2Y-TZP Mg-PSZ Y-PSZ

2.5Y-TZP 3Y-TZP

PMMA -60ºC

Al7075-T651 Steel S355 -196C

PMMA RT PC Steel A508 -196C

Fig. 2. Non-dimensional generalized stress intensity factor in elastoplastic materials (red) and linear elastic materials (black)