|About this Abstract
||2017 TMS Annual Meeting & Exhibition
||Biological Materials Science
||Structure and Mechanical Behavior of Coelacanth Scales
||Haocheng Quan, Wen Yang, Robert Ritchie, Marc Meyers
|On-Site Speaker (Planned)
The “living fossil”, Coelacanth, has lived on earth for more than 300 million years and its morphology rarely changed from its original characteristics. The whole fish body is armored by very rough scales and they are overlapped by each other, which effectively protect the fish from the predator’s attack. The scales have a mineralized outer layer and collagenous laminated inner layer. Morphology characterizations manifest that the arrangement of collagen fibers in the inner layer forms a “double-twisted” Bouligand-like structure and the inter bundle collagen fibrils go through almost whole thickness of scale. Mechanical tests indicate the high mechanical performance of the scale and the in situásynchrotron small-angle X-ray scattering test reveals the toughening mechanisms including collagen fibril sliding, stretching, fiber reorientation and delamination.
||Planned: Supplemental Proceedings volume