PSI - Issue 34

Rhys Jones et al. / Procedia Structural Integrity 34 (2021) 39–44 Rhys Jones/ Structural Integrity Procedia 00 (2021) 000 – 000

42 4

Scalmalloy R = 0.1 Computed Scalmalloy R = 0.1 Scalmalloy R = 0.7 Computed Scalmalloy R = 0.7

1.0E-05

1.0E-06

7075-T7531 R = 0.1 7075-T7531 R = 0.7 7050-T7451 R = 0.1 7050-T7451 R = 0.7

1.0E-07

da/dN (m/cycle)

1.0E-08

1.0E-09

1.0E-10

1.0E-11

50

0.1

1

10

Δ K (MPa √m)

Fig. 1. The R = 0.1 and 0.7 da/dN versus Δ K curves for SLM Scalmalloy, AA7075-T7351 and AA7050-T7451.

1.0E-05

Scalmalloy R = 0.7

y = 2.64E-09x 1.83E+00 R² = 9.95E-01

Scalmalloy R = 0.1

1.0E-06

7075-T7351

1.0E-07

7050-T7451

da/dN (m/cycle)

1.0E-08

1.0E-09

1.0E-10

1.00E-01

1.00E+00

1.00E+01

1.00E+02

Δ κ (MPa √ m)

Fig. 2. The da/dN versus Δ κ curves for SLM Scalmalloy and the corresponding curves for 7075-T7351 and 7050-T745