Design of Isogrid Shells for Venus Surface Probes

Ossola, Enrico; Borgonia, John Paul; Hendry, Morgan L.; Sunada, Eric; Brusa, Eugenio; Sesana, Raffaella

doi:10.2514/1.a34823

Cited by 2 publications

(1 citation statement)

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“…Further experiments will be necessary, to investigate the behavior of lattice structures under tensile, bending or multi-axial loading, as well as fatigue, to assess their applicability to lightweight structures and shells. 35…”

Section: Methodsmentioning

confidence: 99%

Fabrication defects and limitations of AlSi10Mg lattice structures manufactured by selective laser melting

Ossola

Shapiro

Pate

et al. 2021

Proceedings of the Institution of Mechanical Engineers, Part L:

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Additive manufacturing has enabled the production of lattice structures with tailored mechanical properties. However, process limitations still exist, affecting the quality of the struts, practically limiting sizes and types of printable unit cells. Typically, long, thin, unsupported horizontal struts exhibit large deviations from ideal geometries, due to high surface roughness and internal porosity. AlSi10Mg specimens were designed and fabricated by laser powder bed fusion to investigate the role of strut orientation, size, and overhang length using different sets of process parameters. Visual inspection, three-dimensional scanning, and metallographic inspection of the cross-sections were performed. A quality control methodology based on dimensional and geometric tolerances has been defined in order to quantitatively characterize the quality of the struts. Optimized process parameters were selected and used to fabricate octet-truss specimens which were then characterized by compression testing.

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Section: Methodsmentioning

confidence: 99%