Funk S, Stötzel T, Fey T (2026)
Publication Type: Journal article
Publication year: 2026
Book Volume: 26
Article Number: 100968
DOI: 10.1016/j.oceram.2026.100968
The mechanical performance of porous and cellular structures is closely correlated with their macrostructure geometric design. The impact of structural variations on the physical properties, in particular strength, stiffness, and load distribution, is of critical importance. An optimized architectural design, which is often only possible by 3D-printing, can result in a significant enhancement of these properties. Different sized Kelvin cell structures with varying angles were designed by stretching or compressing Kelvin cells with a 90° angle along the z-axis. This resulted in architectures with variations of controlled junction angles ranging from 60° to 150°, which were VPP 3D-printed with alumina and sintered at 1600 °C. The results of the compression tests prove that variations in the deformation angles unlock exceptional mechanical properties. The strength was increased by the factor of nine by tuning the angle up to 150°. This investigation highlights the potential for optimizing cellular structures in order to obtain specific mechanical properties, which can be readily achieved through the precision of the VPP printing process.
APA:
Funk, S., Stötzel, T., & Fey, T. (2026). Geometric angle tuning unlocks exceptional mechanical strength in VPP-printed Al₂O₃ Kelvin Cells. Open Ceramics, 26. https://doi.org/10.1016/j.oceram.2026.100968
MLA:
Funk, Swantje, Tim Stötzel, and Tobias Fey. "Geometric angle tuning unlocks exceptional mechanical strength in VPP-printed Al₂O₃ Kelvin Cells." Open Ceramics 26 (2026).
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