PSI - Issue 60

Rohan Nair et al. / Procedia Structural Integrity 60 (2024) 93–114 Rohan Nair / StructuralIntegrity Procedia 00 (2023) 000–000

112

20

Fracture locations

Fig. 26: frame capture post burst

Seven locations namely R0 to R6 marked on the inner side of the test article in full field map at 18.5 bar (just before burst) is shown in Fig. 27. The hoop strain plots for the 7 locations are shown in Fig. 28. Maximum hoop strain of about 18500 µs was measured on the RW2 weld location (R2 location in DIC) on the adaptor side of the test article. The non-linearity in strain values w.r.to pressure started from 12 bar onwards for the same location. The maximum hoop strain observed in parent metal location was about 3000 µs (R3 location in DIC).

Fig. 27: Full field map of inner side of Test Article at 18.5 bar

20

X: 7573 Y: 18.7

X: 8409 Y: 18.58

X: 9786 Y: 18.58

X: 1.268e+04 Y: 18.58

X: 3084 Y: 18.33

X: 1.869e+04 Y: 18.33

18

16

R0 R1 R2 R3 R4 R5 R6

14

12

X: 2427 Y: 12.05

10

8

Pressure (Bar)

6

4

2

0

0

0.2

0.4

0.6

0.8

1

1.2

1.4

1.6

1.8

2

e1 (  )

x 10 4

Fig. 28: Hoop strain plot of R0 to R6 locations