PSI - Issue 68

Stefan Fladischer et al. / Procedia Structural Integrity 68 (2025) 486–492 S. Fladischer et al. / Structural Integrity Procedia 00 (2024) 000–000

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Fig. 7. Experimental test results: (a) summary of run-out load levels for interacting cracks with colorized trend lines from Fig. 6; (b) light optical microscopy fractography image of a specimen with a 0 = 1mmand d 0 = 2mm

Ongoing follow up investigations focus on the observed disparity between experimental tests and short crack growth simulations. The presented simulated data sets are extended to cyclic R-curves with di ff erent length scales but also to crack pairs of di ff ering sizes a 0 b 0 . Moreover, a comparative notch fatigue investigation will deal with the application of the theory of critical distances as well as strain energy density methods instead of the presented fracture mechanical approach to the analysis of defect interaction e ff ects.

References

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