PSI - Issue 13

Tomasz Brynk et al. / Procedia Structural Integrity 13 (2018) 1267–1272 Tomasz Brynk/ Structural Integrity Procedia 00 (2018) 000 – 000

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3D DIC measurement

Model after parameters optimization

u [mm] v [mm] Fig. 4. Exemplary maps form DIC measurements and corrected analytical model after parameters optimization for hole of 1.5 mm diameter and 1 mm depth Average results of residual stress components determined during the optimization process are presented in Fig. 5. Generally, stress components are concordant with applied loading conditions, however stress values determined in sample longitudinal direction are 35-74% higher than anticipated. Calculated  xx values increase with hole depth.

Fig. 5. Results of residuals stress calculations for three holes depths