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首页> 外文会议>Nanomechanical testing in materials research and development V >PERFORMANCE OF A SINGLE INTERFACE IN A BIOCOMPOSITE STRUCTURE MEASURED USING MICROCANTILEVER MODULATION EXPERIMENT
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PERFORMANCE OF A SINGLE INTERFACE IN A BIOCOMPOSITE STRUCTURE MEASURED USING MICROCANTILEVER MODULATION EXPERIMENT

机译：用微悬臂梁调制实验测量生物复合结构中单个界面的性能

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摘要

Biological mineral-organic composite materials are known to be tough, stiff, stable, viscoelastic bodies capable to creep, recover, absorb energy and even filter particular vibrations. This exceptional mechanical functionality is associated with intricate hierarchical architectures of biocomposites which often consist of stiff mineral units surrounded by extremely thin organic interfaces. The latter play a critical but poorly understood role in the unique static and dynamic performance of the bulk. In this work we propose a new method to study static and dynamic mechanical performance of a single thin interface in a biocomposite structure which is based on force modulation experiment (performed using nanoindentation instrumentation) of a microbeam containing one individual interface (prepared by Focused Ion Beam milling technique) - Figure 1. The validity of the proposed method is confirmed by a successful measurement of known elastic modulus and damping coefficient of 1 μm thick organic interfaces in the calcitic prismatic structure in the marine shell Pinna nobilis.
机译：众所周知，生物矿物-有机复合材料是坚韧，坚硬，稳定的粘弹性体，能够蠕变，恢复，吸收能量，甚至过滤特定的振动。这种卓越的机械功能与复杂的生物复合材料层次结构相关，生物结构通常由被极薄的有机界面包围的硬质矿物单元组成。后者在散装的独特静态和动态性能中起着至关重要的作用，但鲜为人知。在这项工作中，我们提出了一种新的方法来研究生物复合材料结构中单个薄界面的静态和动态力学性能，该方法基于包含单个界面（由聚焦离子束制备）的微束的力调制实验（使用纳米压痕仪进行）铣削技术）-图1.通过成功测量船用壳体Pinna nobilis的钙质棱柱结构中已知的弹性模量和1μm厚有机界面的阻尼系数，证实了该方法的有效性。

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