Journal ArticleDOI
Fabrication and deformation of three-dimensional hollow ceramic nanostructures
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TLDR
The fabrication of hollow ceramic scaffolds that mimic the length scales and hierarchy of biological materials are reported, suggesting that the hierarchical design principles offered by hard biological organisms can be applied to create damage-tolerant lightweight engineering materials.Abstract:
Creating lightweight, mechanically robust materials has long
been an engineering pursuit. Many siliceous skeleton species—
such as diatoms, sea sponges and radiolarians—have remarkably
high strengths when compared with man-made materials
of the same composition, yet are able to remain lightweight
and porous1–7. It has been suggested that these properties
arise from the hierarchical arrangement of different structural
elements at their relevant length scales8,9. Here, we report the
fabrication of hollow ceramic scaffolds that mimic the length
scales and hierarchy of biological materials. The constituent
solids attain tensile strengths of 1.75 GPa without failure
even after multiple deformation cycles, as revealed by in situ
nanomechanical experiments and finite-element analysis. We
discuss the high strength and lack of failure in terms of stress
concentrators at surface imperfections and of local stresses
within the microstructural landscape. Our findings suggest that
the hierarchical design principles offered by hard biological organisms
can be applied to create damage-tolerant lightweight
engineering materials.read more
Citations
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Journal ArticleDOI
The avian egg exhibits general allometric invariances in mechanical design
TL;DR: A dimensionless number C is defined, a function of egg weight, stiffness and dimensions, to quantify how stiff an egg is with respect to its weight after removing geometry-induced rigidity, and is found to be nearly invariant for most species, including tiny hummingbirds and giant elephant birds.
Journal ArticleDOI
Systematic design of high-strength multicomponent metamaterials
TL;DR: In this article, the impact of deviations in the manufactured metamaterials and their effect on their final performance has not been studied systematically, and there are also no guidelines for selecting materials in a multi-material lattice structure to achieve higher mechanical performance.
Journal ArticleDOI
Addendum: anomalous mechanical behavior of the deltic, squaric and croconic cyclic oxocarbon acids
TL;DR: In this paper, it was shown that croconic acid exhibits negative linear compressibility (NLC) for applied pressures larger than 0.4 GPa directed along the direction of minimum Poisson ratio.
Journal ArticleDOI
Compression and buckling of microarchitectured Neovius-lattice
Diab W. Abueidda,Mohamed Elhebeary,Cheng Shen (Andrew) Shiang,Rashid K. Abu Al-Rub,Iwona Jasiuk +4 more
TL;DR: In this article, the authors investigate the mechanical properties of a novel microlattice based on the Neovius surface, a member of the triply periodic minimal surfaces, which exhibits high uniaxial modulus, energy absorption, and strength.
Journal ArticleDOI
Design concepts for generating optimised lattice structures aligned with strain trajectories
TL;DR: In this paper, a new lattice optimisation methodology is presented that tailors the size, shape and orientation of individual lattice trusses in 3D space by using principal strain fields obtained from topology optimisation.
References
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Book
Cellular Solids: Structure and Properties
Lorna J. Gibson,Michael F. Ashby +1 more
TL;DR: The linear elasticity of anisotropic cellular solids is studied in this article. But the authors focus on the design of sandwich panels with foam cores and do not consider the properties of the materials.
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Introduction to Ceramics
TL;DR: In this paper, the authors present a model for the development of the MICROSTRUCTURE in CERAMICS based on phase transformation, glass formation and glass-Ceramics.
MonographDOI
Mechanical Behavior of Materials
TL;DR: A balanced mechanics-materials approach and coverage of the latest developments in biomaterials and electronic materials, the new edition of this popular text is the most thorough and modern book available for upper-level undergraduate courses on the mechanical behavior of materials as discussed by the authors.
Journal ArticleDOI
THE MATERIAL BONE: Structure-Mechanical Function Relations
S. Weiner,Hanoch Daniel Wagner +1 more
TL;DR: The structure-mechanical relations at each of the hierarchical levels of organization are reviewed, highlighting wherever possible both underlying strategies and gaps in the authors' knowledge.