Abstract
It has been demonstrated that stretching-dominated materials are much more weight-efficient and can facilitate multifunction integration than the conventional bending-dominated cellular solids, however, with some difficulty in fabrication. In this study, metallic pyramidal lattice truss core sandwich structures are fabricated from EOS Aluminium AlSi10Mg, utilizing additive manufacturing method. Out-of- and in- plane compression as well as shear tests were carried out in order to measure the stiffness and strength properties of the structures. The out-of-plane compressive strength is determined by buckling of struts, and samples fail in macro buckling in in-plane tests. The shear strength of the samples is dominated by the node failure. The measurements indicate that lattice truss materials fabricated by additive manufacturing method is characterized by excellent process stability, providing new opportunities for cellular solids.
| Original language | English |
|---|---|
| State | Published - 2017 |
| Event | 21st International Conference on Composite Materials, ICCM 2017 - Xi'an, China Duration: 20 Aug 2017 → 25 Aug 2017 |
Conference
| Conference | 21st International Conference on Composite Materials, ICCM 2017 |
|---|---|
| Country/Territory | China |
| City | Xi'an |
| Period | 20/08/17 → 25/08/17 |
Keywords
- Additive manufacturing
- Mechanical properties
- Pyramidal truss
- Sandwich structures
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