Stanovení vlivu deformace na změnu koeficientu tření
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Date
2023-06-20
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Abstract
Bakalářská práce se zabývá experimentálním zjištěním vlivu deformace na velikost koeficientu tření při tribologické zkoušce protahováním pásku. V rámci teoretické části jsou poskytnuty informace o tribologii, tření, druzích tření, mazivech, druzích maziv, ochranných povlacích plechů, tribologických zkouškách maziv a ochranných povlacích plechů. V rámci praktické části byla provedena tribologická zkouška protahováním pásku na zařízení SOKOL 400. Zkouška byla prováděna konstantní rychlostí posuvu s diskrétně se zvyšujícím kontaktním tlakem. Naměřené hodnoty tribologických sil byly zpracovány do grafů a tabulek. Z maximální síly v ustálené oblasti byly vypočítány hodnoty koeficientů tření, které jsou poté porovnávány mezi vzorky bez deformace, s 10% deformací a s 20% deformací. Provedena je také analýza kvality povrchu po provedeném tribologickém testování s ohledem na hodnoty drsnosti povrchu vzorků. K ověření statistické významnosti naměřených dat posloužila dvoufaktorová analýza rozptylu ANOVA. V závěru jsou shrnuty hlavní výsledky včetně doporučení k dalšímu výzkumu.
This batchelor thesis deals with the experimental determination of the effect of the deformation on the change in the friction factor during a tribological test by stretching the tape. The theoretical part provides information on tribology, friction, types of friction, lubricants, types of lubricants, protective coating sheets and tribological tests of lubricants and protective coating sheets. As part of the practical part, a tribological test was performed by stretching the tape on the SOKOL 400 device. The test was performed at a constant feed rate with discretely increasing contact pressure. The measured values of tribological forces were processed into graphs and tables. The values of friction factor were calculated from the maximum force in the steady region, which are then compared between samples without deformation, with 10% deformation and with 20% deformation. An analysis of the surface quality after tribological testing is also carried out with respect to the surface roughness values of the samples. A two-factor analysis of variance ANOVA was used to verify the statistical significance of the measured data. In the conclusion, the main results are summarized, including recommendations for further research.
This batchelor thesis deals with the experimental determination of the effect of the deformation on the change in the friction factor during a tribological test by stretching the tape. The theoretical part provides information on tribology, friction, types of friction, lubricants, types of lubricants, protective coating sheets and tribological tests of lubricants and protective coating sheets. As part of the practical part, a tribological test was performed by stretching the tape on the SOKOL 400 device. The test was performed at a constant feed rate with discretely increasing contact pressure. The measured values of tribological forces were processed into graphs and tables. The values of friction factor were calculated from the maximum force in the steady region, which are then compared between samples without deformation, with 10% deformation and with 20% deformation. An analysis of the surface quality after tribological testing is also carried out with respect to the surface roughness values of the samples. A two-factor analysis of variance ANOVA was used to verify the statistical significance of the measured data. In the conclusion, the main results are summarized, including recommendations for further research.
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tribologie, koeficient tření, deformace, kontaktní tlak, ANOVA