Protection mechanisms of the iron-plated armor of a deep sea hydrothermal vent gastropod
Author(s)Yao, Haimin; Dao, Ming; Imholt, Timothy; Huang, Jamie; Bonilla, Alejandro; Suresh, Subra; Ortiz, Christine; Wheeler, Kevin; ... Show more Show less
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Biological exoskeletons, in particular those with unusually robust and multifunctional properties, hold enormous potential for the development of improved load-bearing and protective engineering materials. Here, we report new materials and mechanical design principles of the iron-plated multilayered structure of the natural armor of Crysomallon squamiferum, a recently discovered gastropod mollusc from the Kairei Indian hydrothermal vent field, which is unlike any other known natural or synthetic engineered armor. We have determined through nanoscale experiments and computational simulations of a predatory attack that the specific combination of different materials, microstructures, interfacial geometries, gradation, and layering are advantageous for penetration resistance, energy dissipation, mitigation of fracture and crack arrest, reduction of back deflections, and resistance to bending and tensile loads. The structure-property-performance relationships described are expected to be of technological interest for a variety of civilian and defense applications.
DepartmentMassachusetts Institute of Technology. Department of Materials Science and Engineering
Proceedings of the National Academy of Sciences of the United States of America
National Academy of Sciences
Yao, Haimin et al. “Protection mechanisms of the iron-plated armor of a deep-sea hydrothermal vent gastropod.” Proceedings of the National Academy of Sciences 107.3 (2010): 987 -992.©2011 by the National Academy of Sciences.
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