| About this Abstract |
| Meeting |
2023 TMS Annual Meeting & Exhibition
|
| Symposium
|
Biological Materials Science
|
| Presentation Title |
Bio-Inspired Composites and Metamaterials
from High-aspect Ratio Ribbons |
| Author(s) |
Hannes C. Schniepp, Ben Skopic |
| On-Site Speaker (Planned) |
Hannes C. Schniepp |
| Abstract Scope |
Fibrils are a dominant archetype in biogenic and synthetic structural materials. Composites relying on unidirectional fibers are limited in penetration resistance and are anisotropic. Advanced structures like Bouligands address these problems. One remaining deficiency of fibrous systems is the weak mechanical coupling between fibers. One possible solution is to flatten fibers to ribbons, to increase contact area between filaments. We found such natural materials systems, like certain cocoons, or the recluse spider’s ribbon silk. Our analysis has revealed that these materials have several other advantages, such as enhanced toughness even at the single-filament level, or adhesive locking mechanisms. This can lead to van der Waals-based adhesive bonds surpassing the tensile strength of the tapes. Inspired by these findings, we have combined tapes with Bouligand-type approaches to make matrix-free composites with tunable mechanical properties and outstanding mechanical performance. We believe tapes have a huge untapped potential for next-generation bio-inspired composites. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Biomaterials, Composites, Sustainability |