Importance of light intensity selection in the surface topography measurements using optical profilometer

ABSTRACT: Several isotropic and anisotropic surface topographies were analysed. Surface measurements were made using white light interferometer Talysurf CCI Lite, version 2.8.2.95. All surfaces were measured with different light intensity. Light intensity was changed in the range 10%–90% every time at 5%. After measurement each surface was levelled and non-measured points were filled up. Parameters from ISO 25178 group and parameters from the Sk family were calculated. Parameters were calculated using the software Talymap Gold, version 6.0. Influence of light intensity on the change of surface topography parameters was analysed.

KEYWORDS: surface topography, light intensity, optical profilometer, surface roughness.

STRESZCZENIE: W pracy badano wpływ doboru natężenia oświetlenia na wyniki pomiarów parametrów chropowatości, jak również wpływ tegoż natężenia na ilość punktów niezmierzonych z wykorzystaniem interferometru światła białego Talysurf CCI light. Badaniu poddano zarówno próbki anizotropowe (szlifowane), jak i izotropowe (kulowane). Natężenie oświetlenia zmieniano w zakresie od 10 do 90% każdorazowo co 5%. Określono wpływ zmiany natężenia oświetlenia na jakość pomiaru oraz na zmianę wartości parametrów chropowatości.

SŁOWA KLUCZOWE: topografia powierzchni, natężenie oświetlenia, profilometr optyczny, chropowatość powierzchni.

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DOI: http://dx.doi.org/10.17814/mechanik.2015.2.82