| About this Abstract |
| Meeting |
2023 TMS Annual Meeting & Exhibition
|
| Symposium
|
Biological Materials Science
|
| Presentation Title |
Understanding the Fibrous Nodal Design at the Sieve Plate of Glass Sponge E. aspergillum: A Structural-mechanical Exploration |
| Author(s) |
Hongshun Chen, Ling Li |
| On-Site Speaker (Planned) |
Hongshun Chen |
| Abstract Scope |
The silica-based lattice skeleton of the glass sponge Euplectella aspergillum has been extensively explored and demonstrated to be an excellent model system for bio-inspired lattices. However, the multiscale structures and mechanics of the sieve plate—a lattice cap—has never been explored. Here, we perform the structural-mechanical analysis of the net-like sieve plate. Firstly, the Voronoi-like network of the sieve plate is analyzed by using an index of regularity, which reveals a value of ~0.7, indicating the improved fracture toughness. Secondly, based on µ-CT imaging, we devise a workflow to extract the structural information of individual sieve plate node which is based on fused spicule bundles. Thirdly, we carry out ex-situ and synchrotron in-situ compression experiments on the sieve plate nodes. They demonstrate the successive failure and good energy absorption capability despite the brittle silica constituent, which is attributed to the de-lamination of spicules and cracking at the inter-spicule connections. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Biomaterials, Mechanical Properties, Modeling and Simulation |