PSI - Issue 21

Taiko Aikawa et al. / Procedia Structural Integrity 21 (2019) 173–184 Author name / Structural Integrity Procedia 00 (2019) 000 – 000

183

11

#1 (thickness direction)

#2 (width direction)

Fig. 14 Brittle fracture surfaces of DWTT test at - 60℃

Table 7 Roughness of fracture surface

mark

Surface area increase rate S dr

#1 #2

0.33 0.20

#1

#2

Fig. 15 Angled appearance of fracture surface of DWTT test