|About this Abstract
||2017 TMS Annual Meeting & Exhibition
||Biological Materials Science
||Impact and Wear Resistant Biological Composites: Insight to Next Generation Multifunctional Materials
||Nicholas Yaraghi, Steven Herrera, Lessa Grunenfelder, Nobphadon Suksangpanya, David Restrepo, Enrique Escobar de Obaldia, C. Jeong, Richard Wuhrer, Pablo Zavattieri, David Kisailus
|On-Site Speaker (Planned)
We investigate the hyper-mineralized combative dactyl club of mantis shrimp, highly aggressive marine crustaceans, and the heavily crystallized radular teeth of chitons, mollusks that graze on hard rock for algae. Our analyses of the mantis’ dactyl club reveal a multi-regional composite of either oriented crystalline hydroxyapatite or amorphous carbonated calcium phosphate, integrated with an architecture-specific chitinous organic matrix. We highlight regional ultrastructures and discuss their role in damage-tolerance and impact-resistance. Similarly, our analyses of the chiton teeth reveal a hierarchically arranged shell of organic-encased, highly oriented nanostructured magnetite rods surrounding a soft core of organic-rich iron phosphate, all connected to a flexible organic support. We discuss these ultrastructures to uncover structure–mechanical property relationships in abrasion resistant and damage tolerant teeth. Finally, we have fabricated biomimetic engineering composites with impact resistance that surpass the performance of composites found in many large commercial aircraft and are developing abrasion-resistant multifunctional coatings.
||Planned: Supplemental Proceedings volume