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Meeting 2018 TMS Annual Meeting & Exhibition
Symposium Biological Materials Science
Presentation Title H-5: Characterizing the Collagen Structure of Armored Carapace of the Boxfish
Author(s) Sean N. Garner
On-Site Speaker (Planned) Sean N. Garner
Abstract Scope The carapace of the boxfish (Lactoria cornuta) is comprised of hexagonal dermal scutes made from a compliant protein base and a mineral surface plate. These scutes compensate for the boxfish’s slow swim speeds by offering a strong and flexible armor to protect against predators. The mineral plates interface together in a suture-like structure with an underlying impact resistant collagen structure bridging the plates together. The goal of this project is to further characterize the complex collagen structure found in the boxfish dermis using scanning and transmission electron microscopy (SEM,TEM), micro-computed tomography (-CT), and nanoindentation. It has been previously shown with tensile, punch, and shear tests that failure usually occurs on the collagen fibers at the interfaces between scutes, as opposed to the sutured mineral interface or the collagen network under the interior of the scutes. Previous SEM characterization of the scutes with the mineral plate removed shows the collagen fibers in an evenly spaced ladder-like orientation. This ladder-like orientation has been further confirmed by the data obtained from in-situ SEM and in-situ small angle x-ray scattering. Utilizing SEM, TEM, -CT, and nanoindentation characterization provides a better 3-dimensional understanding of the complex collagen network and its resultant toughening mechanisms. These data will aid in optimizing future finite element analyses and further research being performed on bioinspired designs for impact resistant armors. This work is supported by funding provided by the Multi-Univesity Research Initiative through the Air Force Office of Scientific Research (AFOSR-FA9550-15-1-0009)
Proceedings Inclusion? Planned: Supplemental Proceedings volume

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A Novel In Vitro Fatigue Test for Biomimetic Implants Made of UHMWPE
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An Anatomic Breast Phantom Mimicking Varying Levels of Radiographic Tissue Density for Translational Investigation of Contrast-enhanced Imaging Using Targeted Nanoparticles
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Automatic Shape-based Cell Identification in Arabidopsis Thaliana Cotyledons Using 3D Moment Invariants
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Design and Testing of Bio-inspired Flexible Armors
Development of Bamboo Based Bio-composites
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Energy Absorbent Natural Keratin Materials and Bioinspired Designs
Finite Element Simulations and 3D-printed Models of Bone as an Interpenetrating Composite
Fracture and Fatigue Behavior of Silver-cored Drawn Filled Tube Strands for Biomedical Applications
Freeze Casting of Surface-magnetized TiO2 Using a Uniform Magnetic Field to Fabricate Materials Inspired by Bone
From Superhydrophobic to Superhydrophilic: Synthesis of Multifunctional Surfaces Inspired from Carnivorous Plants
H-5: Characterizing the Collagen Structure of Armored Carapace of the Boxfish
H-6: Density and Vessel Distribution Interactions in the Impact Resistance of Wood
H-7: Freeze Casting of Bioinspired Porous Ring Structures through Ultrasound Directed Self-assembly
H-8: Numerical Investigation of Force Network in 3D Heterogeneous Cellularized ECM
H-9: Transparent Teeth of Deep-sea Dragonfish
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