PSI - Issue 28

G. Meneghetti et al. / Procedia Structural Integrity 28 (2020) 1536–1550 G. Meneghetti et al./ Structural Integrity Procedia 00 (2019) 000–000

1544

9

Finally, the last two configurations were designed to understand the effects of the axial distance (third configuration with Y I = 4 mm and θ I = 0°, Fig. 7) or angular position (fourth configuration with Y I = 11.5 mm and θ I = 50°, Fig. 8) of the current probes. Noteworthily, the configurations providing a local current input (second, third and fourth) were simulated by assuming that the current was injected through a cylindrical pin with a diameter of 3 mm, made of the same material of the specimen and without contact electrical resistance . In all cases, a constant direct current, I, of 50 A was injected in the specimen.

Fig. 7. 3D electrical FE analyses for calibrating the potential drop method: local current input (Y I = 4 mm, θ I = 0°).

Fig. 8. 3D electrical FE analyses for calibrating the potential drop method: local current input (Y I = 11.5 mm, θ I = 50°).