Issue 59

M. Seguini et al, Frattura ed Integrità Strutturale, 59 (2022) 18-34; DOI: 10.3221/IGF-ESIS.59.02

25

Data Fit Y = T

Data Fit Y = T

35

20

30

25

15

20

10

15

10

5

R=0.99907

R=0.91256

5

5

10

15

20

25

5 10 15 20 25 30 35 Target

Target

HLS =8

HLS =10

HLS =12

Figure 16: Regression with different Hidden layer sizes (HLS). Beam I

Data Fit Y = T

Data Fit Y = T

5 10 15 20 25 30 35

5 10 15 20 25 30 35

R=0.99805

R=0.99982

10

20

30

10

20

30

Target

Target

HLS =8

HLS =10

HLS =12

Figure 17: Regression with different Hidden layer sizes (HLS). Beam II

Based on the results in Figs. 16-17 the best regression can be found when HLS is 8 for beam I. And 10 for beam II. The estimated results can be summarized in Tab. 11.

ACTUAL CRACK LENGTH

B EAM

N HLS =8

N HLS =10

N HLS =12

C ASE 1: 4-4

3.80911 9.54634 19.86071 7.807456 15.32850 24.90070

3.614833 9.710795 19.53756 8.18362 15.22022 25.19147

3.84674 9.66756

C ASE 2: 10-10 C ASE 3: 20-20

1

19.848808 8.93587 15.47560 25.11821

C ASE 4: 8 C ASE 5: 15 C ASE 6: 25

2

Table 11: Exact and estimated results using different HLS for a beam I and II.

31