PSI - Issue 64

Ina Reichert et al. / Procedia Structural Integrity 64 (2024) 145–152 Author name / Structural Integrity Procedia 00 (2019) 000 – 000

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Table 4. Display of model parameter V S for last iterations stage of FWI for selected sensor distances and noise levels, cost function value and size and position of real ellipse marked with red dashed line for combination 2 combination 2 no noise sn = 100 sn = 50 sn = 20 sn = 10 Δs = Δr = 1 m

C f = 24.3978

C f = 31.6413

C f = 28.8050

C f = 29.7298

C f = 28.0452

Δs = Δr = 5 m

C f = 54.1985

C f = 53.6682

C f = 54.5622

C f = 57.1511

C f = 59.8380

Δs = Δr = 10 m

C f = 56.9877

C f = 59.1709

C f = 57.1910

C f = 66.4037

C f = 79.0734

Table 5. Display of model parameter V S for last iterations stage of FWI for selected sensor distances and noise levels, cost function value and size and position of real ellipse marked with red dashed line for combination 3 combination 3 no noise sn = 100 sn = 50 sn = 20 sn = 10 Δs = Δr = 1 m

C f = 21.2567

C f = 21.5502

C f = 23.5205

C f = 28.6081

C f = 23.1984

Δs = Δr = 5 m

C f = 44.6261

C f = 45.8116

C f = 47.5790

C f = 53.4619

C f = 44.6657

Δs = Δr = 10 m

C f = 44.9881

C f = 46.4661

C f = 49.3882

C f = 57.5993

C f = 74.1130