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

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 exci...

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Autores principales:	David Kostal, Shugo Onitsuka, Hiroyoshi Tanaka, Joichi Sugimura, Ivan Krupka, Martin Hartl
Formato:	article
Lenguaje:	EN
Publicado:	Japanese Society of Tribologists 2020
Materias:	grease elastohydrodynamic lubrication fluorescence pyrene excimer monomer Physics QC1-999 Engineering (General). Civil engineering (General) TA1-2040 Mechanical engineering and machinery TJ1-1570 Chemistry QD1-999
Acceso en línea:	https://doaj.org/article/08bfad1611614d1ab8afffa5bb295d08
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spelling	oai:doaj.org-article:08bfad1611614d1ab8afffa5bb295d082021-11-05T09:10:33ZUse of Pyrene for Quantitative Fluorescence Observation of Li-Grease around EHL Contacts1881-219810.2474/trol.15.117https://doaj.org/article/08bfad1611614d1ab8afffa5bb295d082020-05-01T00:00:00Zhttps://www.jstage.jst.go.jp/article/trol/15/3/15_117/_pdf/-char/enhttps://doaj.org/toc/1881-2198This 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.David KostalShugo OnitsukaHiroyoshi TanakaJoichi SugimuraIvan KrupkaMartin HartlJapanese Society of Tribologistsarticlegreaseelastohydrodynamic lubricationfluorescencepyreneexcimermonomerPhysicsQC1-999Engineering (General). Civil engineering (General)TA1-2040Mechanical engineering and machineryTJ1-1570ChemistryQD1-999ENTribology Online, Vol 15, Iss 3, Pp 117-125 (2020)
institution	DOAJ
collection	DOAJ
language	EN
topic	grease elastohydrodynamic lubrication fluorescence pyrene excimer monomer Physics QC1-999 Engineering (General). Civil engineering (General) TA1-2040 Mechanical engineering and machinery TJ1-1570 Chemistry QD1-999
spellingShingle	grease elastohydrodynamic lubrication fluorescence pyrene excimer monomer Physics QC1-999 Engineering (General). Civil engineering (General) TA1-2040 Mechanical engineering and machinery TJ1-1570 Chemistry QD1-999 David Kostal Shugo Onitsuka Hiroyoshi Tanaka Joichi Sugimura Ivan Krupka Martin Hartl Use of Pyrene for Quantitative Fluorescence Observation of Li-Grease around EHL Contacts
description	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.
format	article
author	David Kostal Shugo Onitsuka Hiroyoshi Tanaka Joichi Sugimura Ivan Krupka Martin Hartl
author_facet	David Kostal Shugo Onitsuka Hiroyoshi Tanaka Joichi Sugimura Ivan Krupka Martin Hartl
author_sort	David Kostal
title	Use of Pyrene for Quantitative Fluorescence Observation of Li-Grease around EHL Contacts
title_short	Use of Pyrene for Quantitative Fluorescence Observation of Li-Grease around EHL Contacts
title_full	Use of Pyrene for Quantitative Fluorescence Observation of Li-Grease around EHL Contacts
title_fullStr	Use of Pyrene for Quantitative Fluorescence Observation of Li-Grease around EHL Contacts
title_full_unstemmed	Use of Pyrene for Quantitative Fluorescence Observation of Li-Grease around EHL Contacts
title_sort	use of pyrene for quantitative fluorescence observation of li-grease around ehl contacts
publisher	Japanese Society of Tribologists
publishDate	2020
url	https://doaj.org/article/08bfad1611614d1ab8afffa5bb295d08
work_keys_str_mv	AT davidkostal useofpyreneforquantitativefluorescenceobservationofligreasearoundehlcontacts AT shugoonitsuka useofpyreneforquantitativefluorescenceobservationofligreasearoundehlcontacts AT hiroyoshitanaka useofpyreneforquantitativefluorescenceobservationofligreasearoundehlcontacts AT joichisugimura useofpyreneforquantitativefluorescenceobservationofligreasearoundehlcontacts AT ivankrupka useofpyreneforquantitativefluorescenceobservationofligreasearoundehlcontacts AT martinhartl useofpyreneforquantitativefluorescenceobservationofligreasearoundehlcontacts
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Use of Pyrene for Quantitative Fluorescence Observation of Li-Grease around EHL Contacts

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