Publication detail

Qualitative Analysis of Film Thickness in Rolling EHD Contact by Fluorescence Technique

NEČAS, D. VRBKA, M. ŠPERKA, P. DRUCKMÜLLER, M. SKLÁDAL, P. ŠTARHA, P. KŘUPKA, I. HARTL, M.

Czech title

Kvalitativní analýza tloušťky filmu ve valivém EHD kontaktu s využitím fluorescenční metody

English title

Qualitative Analysis of Film Thickness in Rolling EHD Contact by Fluorescence Technique

Type

conference paper

Language

en

Original abstract

Nowadays, it is well known that tribological processes play a significant role in a daily life. The elastohydrodynamic (EHD) regime of lubrication occurs in many applications including both technical and biological points of view. During the last fifty years there was a rapid evolution in experimental methods which help to better understand friction, lubrication and wear. In this study, mercury lamp induced fluorescence is employed to qualitative assess the film thickness in rolling EHD contact created by a steel ball and glass disk. Several experiments were performed to confirm the theory that the dependence between film thickness and entrainment speed should be linear in logarithmic. The results show satisfactory agreement with this prediction, so the method is correct and suitable for further research in the area of EHD contacts. This method also allows analyzing of compliant non-reflective contacts, which will be described in the next paper.

Czech abstract

Tribologické procesy sehrávají důležitou roli v každodenním životě. Elastohydrodynamický (EHD) režim mazání nastává v mnoha aplikacích ať už z pohledu technického či biologického. V uplynulých padesáti letech došlo k výraznému posunu v oblasti experimentálních metod, které pomáhají lépe porozumět procesům tření, mazání a opotřebení. V této publikaci je popsáno využití fluorescence indukované rtuťovou lampou pro kvalitativní popis tloušťky filmu v EHD kontaktu tvořeném ocelovou kuličkou a skleněným diskem. Bylo provedeno několik experimentů za účelem ověření teorie, že závislost mezi tloušťkou filmu a unášivou rychlostí je v logaritmických souřadnicích lineární. Výsledky ukazují uspokojující shodu s teoretickým předpokladem, z čehož plyne, že metodu lze považovat za korektní a je tak vhodná pro další výzkum v oblasti EHD kontaktů. Metoda také umožňuje analyzovat poddajné a nereflektivní materiály, což bude blíže popsáno v následující publikaci.

English abstract

Nowadays, it is well known that tribological processes play a significant role in a daily life. The elastohydrodynamic (EHD) regime of lubrication occurs in many applications including both technical and biological points of view. During the last fifty years there was a rapid evolution in experimental methods which help to better understand friction, lubrication and wear. In this study, mercury lamp induced fluorescence is employed to qualitative assess the film thickness in rolling EHD contact created by a steel ball and glass disk. Several experiments were performed to confirm the theory that the dependence between film thickness and entrainment speed should be linear in logarithmic. The results show satisfactory agreement with this prediction, so the method is correct and suitable for further research in the area of EHD contacts. This method also allows analyzing of compliant non-reflective contacts, which will be described in the next paper.

Keywords in Czech

EHD, Fluorescence, Tloušťka filmu, Tribologie

Keywords in English

EHD, Fluorescence, Film Thickness, Tribology

RIV year

2014

Released

03.04.2014

Publisher

Springer International Publishing

ISBN

978-3-319-05202-1

ISSN

2195-4356

Book

Modern Methods of Construction Design

Pages from–to

615–622

Pages count

8

BIBTEX


@inproceedings{BUT115723,
  author="David {Nečas} and Martin {Vrbka} and Petr {Šperka} and Miloslav {Druckmüller} and Pavel {Štarha} and Ivan {Křupka} and Martin {Hartl},
  title="Qualitative Analysis of Film Thickness in Rolling EHD Contact by Fluorescence Technique",
  booktitle="Modern Methods of Construction Design",
  year="2014",
  month="April",
  pages="615--622",
  publisher="Springer International Publishing",
  isbn="978-3-319-05202-1",
  issn="2195-4356"
}