| About this Abstract |
| Meeting |
2023 TMS Annual Meeting & Exhibition
|
| Symposium
|
Biological Materials Science
|
| Presentation Title |
Real-time Investigations of Tensile and Fracture Behavior of Fibers from the Venus Flower Basket (Euplectella Aspergillum) |
| Author(s) |
Swapnil Morankar, Yash Mistry, Dhruv Bhate, Clint A. Penick, Nikhilesh Chawla |
| On-Site Speaker (Planned) |
Swapnil Morankar |
| Abstract Scope |
The fibers of the deep-sea sponge Venus flower basket (Euplectella aspergillum) exhibit a layered architecture that consists of a central core surrounded by concentric silica layers. In the present study, we utilized a novel correlative approach involving in situ tensile testing and post-failure fractography to precisely understand the impact of the layered architecture on the tensile and fracture behavior of fibers. The real-time observation of fibers revealed several damage evolution mechanisms, including multiple fracture initiation sites on the surface of the fiber, debonding and crack deflection at the interfaces between the layers, and pullout of the central core. Our correlative study showed that the onion skin-like architecture of the ceramic fibers makes them damage-tolerant through various toughening mechanisms. The further impact of these results on the design of engineering materials will be discussed. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Ceramics, Composites, Mechanical Properties |