Abstract
The effect of the quantization error on values of surface topography parameters was examined. Surface topography was measured using an optical profilometer of 0.01 nm vertical resolution. Twenty isotropic and anisotropic, one- and two-process, random and deterministic surfaces were objects of investigations. The vertical resolution was changed using TalyMap software. Tendencies of changes of three surfaces due to quantization errors were analyzed in details. Parameters of the highest and the smallest sensitivity on errors were selected.
Highlights
The effect of the quantization error on values of surface topography parameters was examined
The assessment of the reliability of surface topography measurements is the subject of many studies [4,5,6,7]
The uplifting nature of the material ratio graph indicates the occurrence of quantization error, which causes significant changes in summit density
Summary
The effect of the quantization error on values of surface topography parameters was examined. The vertical resolution of the digital instrument for surface roughness measurements, i.e. the smallest value that the instrument can display, depends on the measuring range and accuracy of the analog-digital converter. With an eight-bit transducer, only 50 quantization levels will occur for a signal with a normal ordinate distribution. This may lead to the disregard of some summits [9]. E.g. after polishing, quantization errors may occur, even if modern laboratory instruments are used. This article analyzes the impact of vertical resolution on errors in the topography measurement of machined surfaces
Sign-in/Register to view highlights & summary Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
