Abstract Production processes and the processes of wear leave their fingerprints on the surface texture of machine components. Therefore, surface texture is, without a doubt, a carrier of information about these processes. The specialized analysis of surface texture can deliver much useful information about the changes of the surface that occurred during tribological processes as well as information about the phenomena occurring during these processes. This paper presents the kind of analysis done on the basis of the piston skirt surface texture after engine operating conditions. This important engine element was chosen as an object of research since, according to the literature review, the analysis of this surface type is complicated because the base (valley) structure has a deterministic character, but the plateau structure – a random one. The approach presented in the paper gives the possibility to obtain information about changes of particular surface texture layers, thus providing such information as the initial height of the original profile (before wear) and the standard deviation of the plateau part of the surface of the piston skirt. The impact of wear processes on the participation of the particular components of the surface texture is also pointed out. On the basis of the information derived from the model, the method of estimation of local linear wear of the piston skirt is introduced. The possibilities of this approach are presented and discussed as well as a critical analysis of the results.

中文翻译：

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表面作为摩擦学过程信息的载体

摘要 生产过程和磨损过程会在机器部件的表面纹理上留下指纹。因此，表面纹理无疑是这些过程信息的载体。表面纹理的专门分析可以提供关于在摩擦学过程中发生的表面变化以及在这些过程中发生的现象的许多有用信息。本文介绍了基于发动机运行条件后活塞裙表面纹理进行的分析。之所以选择这个重要的发动机元件作为研究对象，是因为根据文献综述，这种表面类型的分析很复杂，因为底部（谷）结构具有确定性特征，而高原结构则是随机的。论文中提出的方法有可能获得有关特定表面纹理层变化的信息，从而提供原始轮廓（磨损前）的初始高度和活塞表面高原部分的标准偏差等信息裙子。还指出了磨损过程对表面纹理的特定成分的参与的影响。根据模型得到的信息，介绍了活塞裙局部线性磨损的估计方法。介绍和讨论了这种方法的可能性以及对结果的批判性分析。从而提供原始轮廓（磨损前）的初始高度和活塞裙表面高原部分的标准偏差等信息。还指出了磨损过程对表面纹理的特定成分的参与的影响。根据模型得到的信息，介绍了活塞裙局部线性磨损的估计方法。介绍和讨论了这种方法的可能性以及对结果的批判性分析。从而提供原始轮廓（磨损前）的初始高度和活塞裙表面高原部分的标准偏差等信息。还指出了磨损过程对表面纹理的特定成分的参与的影响。根据模型得到的信息，介绍了活塞裙局部线性磨损的估计方法。介绍和讨论了这种方法的可能性以及对结果的批判性分析。介绍了活塞裙局部线性磨损的估算方法。介绍和讨论了这种方法的可能性以及对结果的批判性分析。介绍了活塞裙局部线性磨损的估算方法。介绍和讨论了这种方法的可能性以及对结果的批判性分析。