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Determination of the individual phase properties from the measured grid indentation data

机译：根据测量的网格压痕数据确定各个相的性质

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摘要

Statistical distribution of grid indentation data measured in multiphase materials can be significantly affected by the presence of an interface between adjacent materials. The influence of an interface on the distribution of measured indentation moduli was therefore characterized in model metal-metal, ceramic-ceramic, and metal-ceramic composites. The change of properties near the interface was simulated by finite element method and experimentally verified by indentation in proximity of the boundary between two phases with distinctly different mechanical properties varying the depth of penetration and the distance from the interface. Subsequently, the conditional probability of measuring near the interface was quantified by beta distribution function with parameters dependent on the size of the volume/area affected by the presence of the interface. Using this approach, the intrinsic properties of the individual materials were successfully extracted from the experimental grid indentation data.
机译：在多相材料中测量的网格压痕数据的统计分布可能会受到相邻材料之间存在界面的影响。因此，在模型金属-金属，陶瓷-陶瓷和金属-陶瓷复合材料中表征了界面对测得的压痕模量分布的影响。通过有限元方法模拟界面附近的性质变化，并通过压痕在两个相之间的边界附近进行压痕实验，具有明显不同的机械性质，从而改变了渗透深度和距界面的距离。随后，通过β分布函数对界面附近进行测量的条件概率进行了量化，其参数取决于受界面存在影响的体积/区域的大小。使用这种方法，可以成功地从实验网格压痕数据中提取出每种材料的固有特性。

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  • 来源
    《Journal of Materials Research》 |2016年第22期|3538-3548|共11页
  • 作者

    Petr Hausild; Ales Materna; Lenka Kocmanova; Jiri Matejicek;

  • 作者单位

    Faculty of Nuclear Sciences and Physical Engineering, Department of Materials, Czech Technical University in Prague, 120 00 Praha 2, Czech Republic;

    Faculty of Nuclear Sciences and Physical Engineering, Department of Materials, Czech Technical University in Prague, 120 00 Praha 2, Czech Republic;

    Faculty of Nuclear Sciences and Physical Engineering, Department of Materials, Czech Technical University in Prague, 120 00 Praha 2, Czech Republic;

    Institute of Plasma Physics, The Czech Academy of Sciences, 182 00 Praha, Czech Republic;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);美国《生物学医学文摘》(MEDLINE);
  • 原文格式 PDF
  • 正文语种 eng
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