The use of grid nano-indentation as a full-field measurement tool to investigate the properties of heterogeneous materials is described. Contrarily to the reported approaches which rely on statistical analysis, the mechanical properties fields are analyzed herein relying on a topological description of the sample. The spatial convolution function is approached using Hertz contact theory, and the obtained convolution kernel is used to retrieve the mechanical properties of the different phases. This approach is exemplified on results obtained at very low contact force (and thus very high spatial resolution) on a composite material sample made of micrometer-sized fibers in a polymeric matrix.

描述了使用网格纳米压痕作为全场测量工具来研究异质材料的特性。与所报告的依赖统计分析的方法相反，本文中依赖于样品的拓扑描述来分析机械性能领域。使用赫兹接触理论对空间卷积函数进行逼近，并将获得的卷积核用于检索不同相的机械性能。这种方法以在聚合物基质中由微米级纤维制成的复合材料样品上以非常低的接触力（因而非常高的空间分辨率）获得的结果为例。