International comparison of noise in areal surface topography measurements

Abstract In this paper distortion of surface topography measurement results by improper selection of the reference plane is taken into consideration. The following types of surfaces from cylindrical elements were analyzed: cylinder liners after plateau honing, cylinder liners with additionally burnished oil pockets and turned piston skirts. Surface topographies of these elements after a low wear process were also studied. In order to obtain areal surface topography parameters, the form was eliminated using cylinders and polynomials of the following degrees: 2, 3, 4, 6, 8, 10 and 12. Parameters of surfaces after form removal were compared. After analysis of results the reference elements for each kind of surface were recommended. A special procedure was proposed in order to select the degree of a polynomial. This method is based on surface topography changes with increase of polynomial degree. The effect of improper form elimination on measuring uncertainty was studied.

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Calibration of areal surface topography measuring instruments

Fifth International Conference on Optical and Photonics Engineering ◽

10.1117/12.2270533 ◽

2017 ◽

Cited By ~ 4

Author(s):

Jörg Seewig ◽

Matthias Eifler

Keyword(s):

Surface Topography ◽

Measuring Instruments ◽

Areal Surface

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Areal surface topography representation of as-built and post-processed samples produced by powder bed fusion using laser beam melting

Surface Topography Metrology and Properties ◽

10.1088/2051-672x/ab9b73 ◽

2020 ◽

Vol 8 (2) ◽

pp. 024012

Author(s):

Amogh Vedantha Krishna ◽

Olena Flys ◽

Vijeth V Reddy ◽

Johan Berglund ◽

B-G Rosen

Keyword(s):

Laser Beam ◽

Surface Topography ◽

Powder Bed Fusion ◽

Powder Bed ◽

Laser Beam Melting ◽

Areal Surface

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Correlation between Fractal Dimension and Areal Surface Parameters for Fracture Analysis after Bending-Torsion Fatigue

Metals ◽

10.3390/met11111790 ◽

2021 ◽

Vol 11 (11) ◽

pp. 1790

Author(s):

Wojciech Macek

Keyword(s):

Fractal Dimension ◽

Fracture Surface ◽

Surface Topography ◽

Fatigue Loading ◽

Loading Conditions ◽

Surface Method ◽

Loading Ratio ◽

Topography Data ◽

Areal Surface ◽

Total Fracture

This paper investigates the fracture surface topography of two steel and aluminum alloys subject to bending-torsion fatigue loadings, as well as their susceptibility to fatigue performance and failure mechanisms. Using fracture surface topography data analysis, elements with different geometries were elaborated. A correlation between the fractal dimension, other selected parameters of surface topography such as areal Sx, and fatigue loading conditions was found. Distinctions in particular regions of cracks were also recognized through proving the correctness and universality of the total fracture surface method. The influence of fatigue loading parameters on the surface topography of fatigue fractures was demonstrated. For the analyzed cases, results show that the fractal dimension and standard surface topography parameters represent a correlation between them and loading conditions. As a single parameter, the appropriate loading ratio cannot be outright calculated with fractal dimension, but can be estimated with some approximation, taking into account additional assumptions.

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