PSI - Issue 18

Author name / Structural Integrity Procedia 00 (2019) 000–000

8

Matthias Hell et al. / Procedia Structural Integrity 18 (2019) 823–836

830

Fig. 8. Specimen manufacturing for the assessment of the local material behaviour

Fig. 9 shows the results of the investigation of the cyclically stabilized stress-strain relation for different specimen locations. Although the curves nearly coincide in the Hookean regime, the differ significantly in the plastic part. If a homogeneous material behaviour is assumed, a misevaluation of the local strain response especialle under large load amplitudes with significant damage contribution will be the consequence.

Fig. 9. Comparison of the stress-strain behaviour for different extraction positions