Detail publikačního výsledku

Use of Pyrene for Quantitative Fluorescence Observation of Li-Grease around EHL Contacts

KOŠŤÁL, D.; KŘUPKA, I.; HARTL, M.

Originální název

Use of Pyrene for Quantitative Fluorescence Observation of Li-Grease around EHL Contacts

Anglický název

Use of Pyrene for Quantitative Fluorescence Observation of Li-Grease around EHL Contacts

Druh

Článek WoS

Originální abstrakt

This paper presents a simple approach for the use of pyrene as fluorescence dye for the observation of the EHL contacts and behavior of lubricants without natural fluorescence properties. Dependence of the light emission of pyrene on its concentration was studied and also, specific emission and excitation spectrum for pyrene dissolved in PAO was found. A mercury lamp was used as the source of the excitation light with proper filter set according to the fluorescence spectrum. Pyrene’s excimer proved to be very resistive against photobleaching and stable in time. This paper also describes experimental methodology on how to improve fluorescence properties of greases by adding pyrene and this approach was also verified by experiments to ensure that there was no influence on grease or pyrene’s emission. This paper also discusses the calibration procedure for valid quantitative experiments.

Anglický abstrakt

This paper presents a simple approach for the use of pyrene as fluorescence dye for the observation of the EHL contacts and behavior of lubricants without natural fluorescence properties. Dependence of the light emission of pyrene on its concentration was studied and also, specific emission and excitation spectrum for pyrene dissolved in PAO was found. A mercury lamp was used as the source of the excitation light with proper filter set according to the fluorescence spectrum. Pyrene’s excimer proved to be very resistive against photobleaching and stable in time. This paper also describes experimental methodology on how to improve fluorescence properties of greases by adding pyrene and this approach was also verified by experiments to ensure that there was no influence on grease or pyrene’s emission. This paper also discusses the calibration procedure for valid quantitative experiments.

Klíčová slova

grease, elastohydrodynamic lubrication, fluorescence, pyrene, excimer, monomer

Klíčová slova v angličtině

grease, elastohydrodynamic lubrication, fluorescence, pyrene, excimer, monomer

Autoři

KOŠŤÁL, D.; KŘUPKA, I.; HARTL, M.

Rok RIV

2021

Vydáno

01.06.2020

ISSN

1881-218X

Periodikum

Tribology Online

Svazek

15

Číslo

3

Stát

Japonsko

Strany od

117

Strany do

125

Strany počet

9

URL

https://www.jstage.jst.go.jp/article/trol/15/3/15_117/_pdf/-char/en

BibTex

@article{BUT164132,
  author="David {Košťál} and Ivan {Křupka} and Martin {Hartl}",
  title="Use of Pyrene for Quantitative Fluorescence Observation of Li-Grease around EHL Contacts",
  journal="Tribology Online",
  year="2020",
  volume="15",
  number="3",
  pages="117--125",
  doi="10.2474/trol.15.117",
  issn="1881-218X",
  url="https://www.jstage.jst.go.jp/article/trol/15/3/15_117/_pdf/-char/en"
}