PSI - Issue 48

Oleh Yasniy et al. / Procedia Structural Integrity 48 (2023) 183–189 Author name / Structural Integrity Procedia 00 (2019) 000 – 000

187 5

0.010

0.010

0.008

0.008

0.006

0.006

0.004

0.004

Strain, mm/mm

0.002

0.002

Strain (pred), mm/mm

0.000

0.000

0.000

0.005

0.010

0.000

0.005

0.010

Strain (exp), mm/mm

Strain, mm/mm

Fig. 5. The predicted and experimental data of the non-linear region (0-0.01) of the strain for different temperatures obtained by the method of k nearest neighbors (left) and random forests (right)

300

300

Exp Pred_20 Pred_100 Pred_150 Pred_200 Pred_250 Pred_300

250

250

Exp Pred_20 Pred_100 Pred_150 Pred_200 Pred_250 Pred_300

200

200

150

150

100

100

Stress, MPa

Stress, MPa

50

50

0

0

0.000 0.002 0.004 0.006 0.008 0.010

0.000 0.002 0.004 0.006 0.008 0.010

Strain, mm/mm

Strain, mm/mm

Fig. 6. The predicted and experimental dependences of the non-linear region (0-0.01) of the strain for different temperatures obtained by the method of k-nearest neighbors (left) and random forests (right)