|About this Abstract
||2017 TMS Annual Meeting & Exhibition
||Pan American Materials Congress: Advanced Biomaterials
||Structure and Toughening Mechanism of Carp Fish Scales
||Haocheng Quan, Wen Yang, Robert Ritchie, Marc Meyers
|On-Site Speaker (Planned)
Carp fish (Cyprinus carpio) is a common modern ray-finned fish which is adapted to the freshwater all around the world. The scale of carp is a typical elasmoid scale with cycloid shape, the outer layer of which is a thin but highly mineralized layer and the inner layer is a soft collagenous layer with laminated structure. Each lamella of the inner layer is composed of parallel arranged collagen fibers and the orientations of different lamella form a typical Bouligand structure, with a rotation angle around 65°. Due to such structure, the scale has an in-plan anisotropic tensile behavior. However, no matter along the longitudinal direction or transverse direction, the tensile stress-strain curves all have a bell-shape, which indicates the excellent toughness. By using in situ synchrotron small-angle X-ray scattering during mechanical tensile tests, the toughening mechanism of carp scales have been quantitatively investigated.
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