Abstract
Additively manufactured medical devices require proper surface finishing before their use to remove partially adhered particles and provide adequate surface roughness. The literature widely investigates regular lattice structures—mainly scaffolds with small pores to enhance osseointegration; however, only a few studies have addressed the impact of surface finishing on the dimensional deviation and the global and local mechanical responses of lattice samples. Therefore, the current research investigates the impact of biomedical surface finishing (i.e., corundum sandblasting and zirconia sandblasting) on Voronoi lattice structures produced by laser powder bed fusion (LPBF) with large pores and different thicknesses on the surface morphology and global and local mechanical behaviors. MicroCT and SEM are performed for the assessment of dimensional mismatch and surface evaluation. The mechanical properties are investigated with 2D digital image correlation (DIC) in quasi-static compression tests to estimate the impact of surface finishes on local maps of strain. In the quasi-static tests, both the global mechanical performances, as expected, and local 2D DIC strain maps were mainly affected by the strut thickness, and the impact of different surface finishings was irrelevant; on the contrary, different surface finishing processes led to differences in the dimensional deviation depending on the strut thickness. These results are relevant for designing lattice structures with thin struts that are integrated into medical prostheses that undergo AM.
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MDPI and ACS Style
Bregoli, C.; Mohajerani, S.; Fiocchi, J.; Mehrpouya, M.; Elahinia, M.; Tuissi, A.; Vergani, L.M.; Biffi, C.A.
Impact of Surface Finishing on Ti6Al4V Voronoi Additively Manufactured Structures: Morphology, Dimensional Deviation, and Mechanical Behavior. Materials 2024, 17, 4879.
https://doi.org/10.3390/ma17194879
AMA Style
Bregoli C, Mohajerani S, Fiocchi J, Mehrpouya M, Elahinia M, Tuissi A, Vergani LM, Biffi CA.
Impact of Surface Finishing on Ti6Al4V Voronoi Additively Manufactured Structures: Morphology, Dimensional Deviation, and Mechanical Behavior. Materials. 2024; 17(19):4879.
https://doi.org/10.3390/ma17194879
Chicago/Turabian Style
Bregoli, Chiara, Shiva Mohajerani, Jacopo Fiocchi, Mehrshad Mehrpouya, Mohammad Elahinia, Ausonio Tuissi, Laura Maria Vergani, and Carlo Alberto Biffi.
2024. "Impact of Surface Finishing on Ti6Al4V Voronoi Additively Manufactured Structures: Morphology, Dimensional Deviation, and Mechanical Behavior" Materials 17, no. 19: 4879.
https://doi.org/10.3390/ma17194879
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