|About this Abstract
||2017 TMS Annual Meeting & Exhibition
||Biological Materials Science
||H-31: Structure and Mechanical Implications of the Pectoral Fin Skeleton in Longnose Skates
||Wei Huang, Vlado Lubarda, Watcharapong Hongjamrassilp, Jae-Young Jung, Phil Hastings, Joanna McKittrick
|On-Site Speaker (Planned)
Animal propulsion systems are believed to show high energy and mechanical efficiency in assisting movement compared to artificial designs. The longnose skate (Raja rhina), one of the representative examples, shows an elegant undulatory swimming facilitated by its wing-like pectoral fins. The aim of this work is to illustrate the hierarchical structure of the pectoral fin of the longnose skate and explain the mechanical implications of the structural designs by nature. Micro-computed tomography images indicated that the pectoral fins comprise radially oriented fin rays, formed by staggered mineralized skeletal elements stacked end-to-end. Each skeletal element is composed of three tesserae chains, which consist of discrete segments of mineralized tesserae wrapped with unmineralized cartilage. A numerical model based on the morphological data was created to demonstrate how the specific structure affects certain mechanical behaviors. This work is supported by a Multi-University Research Initiative through the Air Force Office of Scientific Research (AFOSR-FA9550-15-1-0009).
||Planned: Supplemental Proceedings volume