PSI - Issue 2_A

S Choudhury et al. / Procedia Structural Integrity 2 (2016) 736–743 S. Choudhury, S. K. Acharyya, S. Dhar/ Structural Integrity Procedia 00 (2016) 000–000

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4.2 Estimation of G fr from the slope of J m-pl versus Δ a Curve

0 100 200 300 400 500 600 700 800 900

0 100 200 300 400 500 600 700 800

y = 307.2x + 444.0

y = 336.9x + 336.9

Serie1 Lineare (Serie1)

Serie1 Lineare (Serie1)

JM‐pl(N/mm2)

0,000

0,500

1,000

1,500

0

0,5

1

Crack Growth (mm)

Fig 5. J M-pl versus Crack growth at 22°C

Fig 6. J M-pl versus Crack growth at 0°C

0 100 200 300 400 500 600 700 800

0 100 200 300 400 500 600 700 800

y = 323.0x + 393.1

y = 310,05x + 349,75

2 )

Serie1

Lineare (Serie1)

J M‐pl (N/mm

Serie1 Lineare (Serie1)

JM‐pl (N/mm2)

0

0,5

1

1,5

0

0,5

1

Crack Growth (mm)

Crack Growth (mm)

Fig 7. J M-pl versus Crack growth at -20°C

Fig 8. J M-pl versus Crack growth at -40°C

0 100 200 300 400 500 600 700 800

0 100 200 300 400 500 600 700 800

y = 295.9x + 327.5

y = 209.8x + 521.7

Serie1 Lineare (Serie1)

Serie1 Lineare (Serie1)

JM‐pl (N/mm2)

JM‐pl (N/mm2)

0

0,5

1

1,5

0,00

0,50

1,00

1,50

Crack Growth (mm)

Crack Growth (mm)

Fig 9. J M-pl versus Crack growth at -60°C

Fig 10. J M-pl versus Crack growth at-7 0°C