Imperfection‐Enabled Strengthening of Ultra‐Lightweight Lattice Materials
Abstract: Lattice materials are an emerging family of advanced engineering materials with unique advantages for lightweight applications. However, the mechanical behaviors of lattice materials at ultra‐low relative densities are still not well understood, and this severely limits their lightweighting potential. Here, a high‐precision micro‐laser powder bed fusion technique is dveloped that enables the fabrication of metallic lattices with a relative density range much wider than existing studies. This technique allows to confirm that cubic lattices in compression undergo a yielding‐to‐buckling failure mode transition at low relative densities, and this transition fundamentally changes the usual strength ranking from plate > shell > truss at high relative densities to shell > plate > truss or shell > truss > plate at low relative densities. More importantly, it is shown that increasing bending energy ratio in the lattice through imperfections such as slightly‐corrugated geometries can significantly enhance the stability and strength of lattice materials at ultra‐low relative densities. This counterintuitive result suggests a new way for designing ultra‐lightweight lattice materials at ultra‐low relative densities.
- Location
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Deutsche Nationalbibliothek Frankfurt am Main
- Extent
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Online-Ressource
- Language
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Englisch
- Bibliographic citation
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Imperfection‐Enabled Strengthening of Ultra‐Lightweight Lattice Materials ; day:16 ; month:09 ; year:2024 ; extent:11
Advanced science ; (16.09.2024) (gesamt 11)
- Creator
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Ding, Junhao
Ma, Qingping
Li, Xinwei
Zhang, Lei
Yang, Hang
Qu, Shuo
Wang, Michael Yu
Zhai, Wei
Gao, Huajian
Song, Xu
- DOI
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10.1002/advs.202402727
- URN
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urn:nbn:de:101:1-2409171411031.890214917414
- Rights
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Open Access; Der Zugriff auf das Objekt ist unbeschränkt möglich.
- Last update
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15.08.2025, 7:30 AM CEST
Data provider
Deutsche Nationalbibliothek. If you have any questions about the object, please contact the data provider.
Associated
- Ding, Junhao
- Ma, Qingping
- Li, Xinwei
- Zhang, Lei
- Yang, Hang
- Qu, Shuo
- Wang, Michael Yu
- Zhai, Wei
- Gao, Huajian
- Song, Xu
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