Marteau Julie, Jourani Abdeljalil, Bigerelle Maxence
Laboratoire Roberval FRE-CNRS 2012, Centre de Recherches de Royallieu, Sorbonne Université, Université de Technologie de Compiègne, 60200 Compiègne, France.
Laboratoire d'Automatique, de Mécanique et d'Informatique industrielle et Humaine (LAMIH) UMR-CNRS 8201, Université Polytechnique des Hauts de France, Le Mont Houy, 59313 Valenciennes, France.
Materials (Basel). 2020 Mar 30;13(7):1589. doi: 10.3390/ma13071589.
The influence of roughness on the results of indentation testing was investigated using a semianalytical model. This model used simulated surfaces that were described using three standard roughness parameters: the root-mean-square deviation S, the wavelength (or cut-off of Gaussian high-pass filter), and the fractal dimension. It was shown that S had the largest effect on the determination of the macrohardness, while the surface wavelength and fractal dimension had negligible effects at the scale of investigation. The error of determination of the macrohardness rose with the increase of the ratio S/h where h was the maximum indentation depth: S/h ratios lower than 0.02 were required to obtain a systematic error of the macrohardness lower than 5%, whatever the examined material mechanical properties (in elasticity and plasticity).
使用半解析模型研究了粗糙度对压痕测试结果的影响。该模型使用了通过三个标准粗糙度参数描述的模拟表面：均方根偏差S、波长（或高斯高通滤波器的截止值）和分形维数。结果表明，S对宏观硬度的测定影响最大，而在研究尺度下，表面波长和分形维数的影响可忽略不计。宏观硬度测定的误差随着S/h比值的增加而增大，其中h为最大压痕深度：无论所研究材料的力学性能（弹性和塑性方面）如何，要使宏观硬度的系统误差低于5%，需要S/h比值低于0.02。
