Development of density-graded sandwich structures with in-situ foaming filaments in additive manufacturing

Tomin, Márton and Lukács, Norbert and Berezvai, Szabolcs (2024) Development of density-graded sandwich structures with in-situ foaming filaments in additive manufacturing. In: Foams® 2024, 2024.09.17-2024.09.20, King of Prussia (PA).

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Abstract

This study investigates using in-situ foamable filaments in extrusion-based additive manufacturing to create density-graded sandwich structures. By varying printing temperatures, we analyzed the foam density, cell structure, and mechanical properties. We also outlined a finite strain viscoelastic-viscoplastic material model for future optimization of layer configuration. The findings highlight the importance of printing temperature adjustment in achieving uniform cell structures and enhanced mechanical properties.

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