| About this Abstract |
| Meeting |
2020 TMS Annual Meeting & Exhibition
|
| Symposium
|
Biological Materials Science
|
| Presentation Title |
The Boxfish Carapace, a Simple Architecture to Control Crack Propagation |
| Author(s) |
Maryam Hosseini, Sean Garner, Steven Naleway, Joanna McKittrick, Pablo Zavattieri |
| On-Site Speaker (Planned) |
Pablo Zavattieri |
| Abstract Scope |
The boxfish carapace contains hexagonal dermal scutes, a combination of a brittle hexagonal plate (hydroxyapatite) on top of a compliant base (type-I collagen) to develop flexible armor and protect against attack and penetration. While the mineral plates are separated by patterned sutures (triangular interlocking patterns), there is no interphase material connecting them, and the connection between scutes is made through the collagen base. This is different from other naturally occurring sutures. The results from the in-situ SEM shear tests between two scutes revealed that this architecture helps to impede cracks around the sutures area. Here, we investigate the effective role of this architecture in controlling the crack direction under shear loading through a systematic and parametric study using analytical, computational models and physical prototypes. |
| Proceedings Inclusion? |
Planned: Supplemental Proceedings volume |