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Meeting 2022 TMS Annual Meeting & Exhibition
Symposium Structural Metamaterials
Presentation Title 3D-printable Cactus and Spider-silk Hydrogel Composites for Next Generation Multifunctional and Sustainable Energy Absorptive Metamaterials
Author(s) Graham J. Day, Qicheng Zhang, Gianni Comandini, Adam Perriman, Fabrizio Scarpa
On-Site Speaker (Planned) Graham J. Day
Abstract Scope Energy absorptive materials are generally fossil-derived or metal-based in design. However, there are emerging opportunities to generate multifunctional composite materials derived from bio-based feedstocks for 3D-printable manufacture. For instance, natural fibre composites exhibit large loss factors in high-amplitude low frequency applications owing to fractal surface features and multiscale architecture and porosity. Here, we have utilized a 3D-printable alginate–pluronic hydrogel, which exhibits significant sound absorption properties as a filler in acoustic metamaterials; it can also be used as a scaffold for reinforcement with cactus-based fibres and mechanically impressive spider dragline silk. We have characterised the low frequency vibration damping properties of this hydrogel and measured loss factors comparable to auxetic foams. Notably, the dynamic modulus of this material is an order of magnitude higher that it’s static modulus, indicating behaviour like that of non-Newtonian fluids under dynamic conditions.
Proceedings Inclusion? Planned:
Keywords Mechanical Properties, Additive Manufacturing, Composites

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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