About this Abstract |
| Meeting |
2027 TMS Annual Meeting & Exhibition
|
| Symposium
|
Biological Materials Science
|
| Presentation Title |
The Role of Jackfruit Thorns in Impact Mitigation |
| Author(s) |
Sheron Stephany Tavares, Andres Andres Perez, Can Uysalel, Iwona Jasiuk, Marc Meyers |
| On-Site Speaker (Planned) |
Sheron Stephany Tavares |
| Abstract Scope |
The jackfruit is the largest fruit globally, with a weight reaching 35 kgf. Upon falling from heights of up to 25 meters, it can retain its integrity through several mechanisms. The surface thorns play an important part in the hierarchy of impact mitigation processes. The gradual collapse of the conical thorns, which have an apex angle ranging from 40 to 45°, are simulated using copper cones with varying angles, ranging from 20 to 60°. Steel cups were used to eliminate lateral spreading of the cones upon compression. The copper was predeformed to create an ideal elasto-plastic response with zero work hardening. The normalized stress vs. compression curves are consistently independent of apex angle. These results are compared with the compressive response of actual thorns. The latter yielded greater energy absorption systematically. Characterization of the thorns reveals a complex fiber structure that provides a gradient in elastic stiffness and deformation mechanisms. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Biomaterials, Characterization, Other |