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首页> 外文期刊>Proceedings of the National Academy of Sciences of the United States of America >Protection mechanisms of the iron-plated armor of a deep-sea hydrothermal vent gastropod
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Protection mechanisms of the iron-plated armor of a deep-sea hydrothermal vent gastropod

机译:深海热液喷口腹足动物的铁质铠装防护机理

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摘要

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.
机译:生物外骨骼,特别是具有异常坚固和多功能特性的外骨骼,具有开发改进的承重和防护工程材料的巨大潜力。在这里,我们报告了Crysomallon squamiferum天然盔甲的多层镀铁多层结构的新材料和机械设计原理,Crysomallon squamiferum是最近发现的来自Kairei印度热液喷发领域的腹足动物软体动物,与任何其他已知的天然或合成工程盔甲不同。我们已经通过纳米尺度的实验和掠夺性攻击的计算模拟确定了不同材料,微观结构,界面几何形状,渐变和分层的特定组合有利于抗穿透性,能量耗散,减轻断裂和裂纹的可能性,减少后偏角,以及抗弯曲和拉伸载荷。对于各种民用和国防应用,所描述的结构-性能-性能关系有望引起技术利益。

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  • 作者单位

    Department of Materials Science and Engineering, Massachusetts Institute of Technology, 77 Massachusetts Avenue, Cambridge, MA 02139;

    Department of Materials Science and Engineering, Massachusetts Institute of Technology, 77 Massachusetts Avenue, Cambridge, MA 02139;

    Raytheon, Inc., 1001 Boston Post Road, Marlboro, MA 01752;

    Department of Materials Science and Engineering, Massachusetts Institute of Technology, 77 Massachusetts Avenue, Cambridge, MA 02139;

    Department of Materials Science and Engineering, Massachusetts Institute of Technology, 77 Massachusetts Avenue, Cambridge, MA 02139;

    Asylum Research, Inc., 6310 Hollister Avenue, Santa Barbara, CA 93117;

    Department of Materials Science and Engineering, Massachusetts Institute of Technology, 77 Massachusetts Avenue, Cambridge, MA 02139;

    Department of Materials Science and Engineering, Massachusetts Institute of Technology, 77 Massachusetts Avenue, Cambridge, MA 02139;

  • 收录信息 美国《科学引文索引》(SCI);美国《生物学医学文摘》(MEDLINE);美国《化学文摘》(CA);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    exoskeleton; mollusc; biomechanics; nanomechanics; nanoindentation;

    机译:外骨骼软体动物生物力学纳米力学纳米压痕;

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