Design of monomaterial sandwich structures made with foam additive manufacturing

Epasto, Gabriella; Rizzo, Daniele; Landolfi, Luca; Detry, Andrea Lorenzo Henri Sergio; Papa, Ilaria; Squillace, Antonino

doi:10.1016/j.jmapro.2024.05.033

Journal of Manufacturing Processes

2024

DOI: 10.1016/j.jmapro.2024.05.033

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Design of monomaterial sandwich structures made with foam additive manufacturing

Gabriella Epasto,

Daniele Rizzo,

Luca Landolfi

et al.

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2024

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Optimising Additive Manufacturing to Produce PLA Sandwich Structures by Varying Cell Type and Infill: Effect on Flexural Properties

Marabello,

Chairi,

Di Bella

2024

J. Compos. Sci.

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The objective of this research is to optimize additive manufacturing processes, specifically Fused Filament Fabrication (FFF) techniques, to produce sandwich structures. Mono-material specimens made of polylactic acid (PLA) were produced, where both the skin and core were fabricated in a single print. To optimize the process, variations were made in both the base cell geometry of the core (Tri-Hexagon and Gyroid) and the core infill (5%, 25%, 50%, and 75%), evaluating their effects on static three-point bending behavior. Optical microscopy was employed to assess both the structure generated by additive manufacturing and the fracture modes. The findings reveal that increasing the infill, and thus the core density, enhances the mechanical properties of the structure, although the improvement is such that samples with 50% infill already demonstrate excellent performance. The difference between hexagonal and Gyroid structures is not significant. Based on microscopic analyses, it is believed that the evolution of 3D printers, from open to closed chamber designs, could significantly improve the deposition of the various layers.

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Optimising Additive Manufacturing to Produce PLA Sandwich Structures by Varying Cell Type and Infill: Effect on Flexural Properties

Marabello,

Chairi,

Di Bella

2024

J. Compos. Sci.

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show abstract

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Design of monomaterial sandwich structures made with foam additive manufacturing

Cited by 1 publication

References 39 publications

Optimising Additive Manufacturing to Produce PLA Sandwich Structures by Varying Cell Type and Infill: Effect on Flexural Properties

Optimising Additive Manufacturing to Produce PLA Sandwich Structures by Varying Cell Type and Infill: Effect on Flexural Properties

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