About this Abstract |
Meeting |
2024 Annual International Solid Freeform Fabrication Symposium (SFF Symp 2024)
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Symposium
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2024 Annual International Solid Freeform Fabrication Symposium (SFF Symp 2024)
|
Presentation Title |
Experimental Characterization of the Compression-compression Fatigue Performance in Flexible 3D Printed Honeycombs |
Author(s) |
Amador Chapa, Enrique Cuan-Urquizo, Pedro Daniel Urbina-Coronado |
On-Site Speaker (Planned) |
Amador Chapa |
Abstract Scope |
Cellular materials are gaining popularity as constituting materials of end-use products thanks to their tunable stiffness and energy absorption ability. Additive manufacturing technologies have allowed the fabrication of these porous materials with engineered topologies. Previous works have characterized the mechanical response of cellular materials, mainly under static loading scenarios; their fatigue behavior is a complex phenomenon, not yet well understood. In this work, we exploited the benefits of fused filament fabrication to build thermoplastic polyurethane honeycombs and characterize their properties under cyclic loading. Two different topologies (hexagonal and square) with same relative density were studied. A geometrical assessment was carried out on specimens to evaluate the accuracy of the selected fabrication process. Compression-compression fatigue tests resulted in the construction of accumulated strain per cycle plots and S-N curves. Our findings illustrated the comparative advantages between stretch- and bending-dominated honeycombs in terms of fatigue life performance. |
Proceedings Inclusion? |
Definite: Post-meeting proceedings |