PSI - Issue 38

W. Radlof et al. / Procedia Structural Integrity 38 (2022) 50–59 W. Radlof et al. / Structural Integrity Procedia 00 (2021) 000 – 000

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Fig. 4: Fatigue behavior of an exemplarily 50% porosity lattice structure tested under bending loading. (a) Cyclic deformation behavior based on the change of stiffness, potential and local strains determined by DIC, (b) cyclic deformation behavior based on the change of potential and local strains for a fatigue life between 40% and 80%. (c, d) DIC images from the bottom side as well as front side of a lattice structure at different states of the fatigue life. (e) Overview of the specimen sides.

Fig. 5: Micrographs of a 50% porosity bending sample stopped at a potential increase of 0.1 mV. (a) Overview of the struts with visible cracks, (b) crack in a vertically built strut and (c) crack in a horizontally built strut. BD