Bartkowiak Tomasz, Grochalski Karol, Gapiński Bartosz, Wieczorowski Michał
Intelligent Machines Laboratory, Institute of Mechanical Technology, Poznan University of Technology, Piotrowo 3, PL-60965 Poznan, Poland.
Division of Metrology and Measurement Systems, Institute of Mechanical Technology, Poznan University of Technology, Piotrowo 3, PL-60965 Poznan, Poland.
Materials (Basel). 2021 Nov 20;14(22):7044. doi: 10.3390/ma14227044.
The fundamental issue in surface metrology is to provide methods that can allow the establishment of correlations between measured topographies and performance or processes, or that can discriminate confidently topographies that are processed or performed differently. This article presents a set of topographies from two-staged processed steel rings, measured with a 3D contact profilometer. Data were captured individually from four different regions, namely the top, bottom, inner, and outer surfaces. The rings were manufactured by drop forging and hot rolling. Final surface texture was achieved by mass finishing with spherical ceramic media or cut wire. In this study, we compared four different multiscale methods: sliding bandpass filtering, three geometric length- and area-scale analyses, and the multiscale curvature tensor approach. In the first method, ISO standard parameters were evaluated as a function of the central wavelength and bandwidth for measured textures. In the second and third method, complexity and relative length and area were utilized. In the last, multiscale curvature tensor statistics were calculated for a range of scales from the original sampling interval to its forty-five times multiplication. These characterization parameters were then utilized to determine how confident we can discriminate (through F-test) topographies between regions of the same specimen and between topographies resulting from processing with various technological parameters. Characterization methods that focus on the geometrical properties of topographic features allowed for discrimination at the finest scales only. Bandpass filtration and basic height parameters Sa and Sq proved to confidently discriminate against all factors at all three considered bandwidths.
表面计量学的根本问题是提供能够在测量的表面形貌与性能或工艺之间建立相关性的方法，或者能够可靠地区分加工或执行方式不同的表面形貌的方法。本文展示了一组经过两阶段加工的钢环的表面形貌，这些形貌是用三维接触轮廓仪测量的。数据是从四个不同区域分别采集的，即顶面、底面、内表面和外表面。这些钢环是通过模锻和热轧制造的。最终的表面纹理是通过用球形陶瓷介质或切割钢丝进行光饰加工获得的。在本研究中，我们比较了四种不同的多尺度方法：滑动带通滤波、三种几何长度和面积尺度分析以及多尺度曲率张量方法。在第一种方法中，ISO标准参数是作为测量纹理的中心波长和带宽的函数来评估的。在第二种和第三种方法中，利用了复杂度以及相对长度和面积。在最后一种方法中，计算了从原始采样间隔到其45倍乘法的一系列尺度上的多尺度曲率张量统计量。然后利用这些表征参数来确定我们能够（通过F检验）在多大程度上可靠地区分同一试样不同区域之间的表面形貌以及由各种工艺参数加工产生的表面形貌。仅关注地形特征几何属性的表征方法只能在最精细的尺度上进行区分。带通滤波以及基本高度参数Sa和Sq被证明能够在所有三种考虑的带宽下可靠地区分所有因素。
