Design of monomaterial sandwich structures made with foam additive manufacturing

• DOI: 10.1016/j.jmapro.2024.05.033
• Publication Date: 2024-05-23T19:32:21Z
• Authors: Gabriella Epasto; Daniele Rizzo; Luca Landolfi; Andrea Lorenzo He...; Ilaria Papa; Antonino Squillace

The flexural behavior of sandwich structures produced through the foam additive manufacturing (FAM) process was examined. FAM allows creation intricate foamed with varying morphology and density gradients using a physical blowing agent (PBA). This technology facilitates production complex, engineered parts made from single material intentionally designed different densities mechanical properties in various sections, as well enabling gradient structures. As foams are widely used industrial applications for composite structures, study aims to investigate under three-points loading 3D printed printing parameters, resulting distinct properties. failure modalities were analyzed by infrared thermography microscopy. results highlight influence parameters on foam's characteristics. bending tests provide insights into strength energy absorption capabilities. Gibson–Ashby curve built previsional based their core shape density. These findings contribute optimizing crafting lightweight, durable components customized properties, achieved monomaterial approach makes recycling easier less impactful, benefiting industries such aviation automotive.