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Meeting 2022 TMS Annual Meeting & Exhibition
Symposium Structural Metamaterials
Presentation Title Exceptional Mechanical Properties of Additively Manufactured Nano-architected Materials with Complex Topologies
Author(s) Lorenzo Valdevit
On-Site Speaker (Planned) Lorenzo Valdevit
Abstract Scope Truss-based architected materials have been investigated for decades for their ability to provide tunable combinations of mechanical properties at low density. Recent progress in additive manufacturing technologies has dramatically expanded the design space, enabling materials designers to think more creatively about optimal topologies. In this presentation, we will discuss three novel topologies with intriguing mechanical properties: cube-octet plate lattices, spinodal shell lattices, and tensegrity truss lattices. All topologies are fabricated by two-photon polymerization Direct Laser Writing (2pp-DLW); subsequently, plate and shell lattices are pyrolyzed, resulting in ceramic nano-architected materials with feature sizes of the order of 100nm. At this scale, existing cracks are too small to induce brittle failure and the theoretical strength of the base material can be achieved. We show that the combination of optimally designed unconventional topologies and unique nanoscale size effects on the constituent material result in complex nano-architected materials with unique combinations of properties.
Proceedings Inclusion? Planned:
Keywords Additive Manufacturing, Ceramics, Nanotechnology

OTHER PAPERS PLANNED FOR THIS SYMPOSIUM

3D-printable Cactus and Spider-silk Hydrogel Composites for Next Generation Multifunctional and Sustainable Energy Absorptive Metamaterials
A Comparison of Energy Absorption Behavior of Additively Manufactured AlSi10Mg Honeycomb, Lattice and TPMS Cellular Structures under Quasistatic Compression
Architectured Bioinspired Alumina with a Metallic Nickel Compliant-phase
Bioinspired Hierarchical Architected Structures Via Additive Manufacturing
Combined Effects of Heterogeneity and Length-scale on Mechanical Properties of Lattice Metamaterials
Controlling Failure with Fractal Chiral Metamaterials
Design of 2D-Mechanical Metamaterials with Spinodal Topologies
Engineering Splat Based Features for Improved Damage Tolerance in Brittle Metamaterials
Exceptional Mechanical Properties of Additively Manufactured Nano-architected Materials with Complex Topologies
Flexibly Tunable Yet Strong Gear-based Mechanical Metamaterials
G-32: Coated Nano- and Micro-lattices via Magnetron Sputtering
G-33: Gaussian Process Regression as a Surrogate Model for the Computation of Dispersion Relations
High-stiffness Metamaterial Composite Structure with Plate Reinforced Strut-microlattice
Interpenetrating Chain Lattices with Tailorable Energy Absorption in Tension
Investigation on Mechanical Properties of Honeycomb-based Cellular Solids and Cylindrical Shells with Structural Hierarchy
Large-strain Compressive Response and Failure Mechanisms of Additively Manufactured Cubic Chiral Lattices
Machine Learning Design of Dynamic/Impact Behaviors
Machine Learning of Symbolic Expressions to Model Dispersion Curves in Metamaterials
Phase Field Modeling of Crack Propagation, Deflection and Delamination in Engineered Interfaces
Seeing Beneath the Surface: Estimating Interior Material Properties with Visual Vibration Tomography
Sensitivity and Uncertainty Quantification Analysis in Phononic Metamaterials through Complex-Variable Finite Element Method
Single Test Evaluation and Design of Directional Elastic Properties in Anisotropic Materials
Structural Locking in Multimodal Origami Metamaterials
Topological States and Bandgaps in Dimerized Minimal Surfaces
Viscoelastic Dynamics of Polymeric Phononic Materials

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