Characterization of Friction Regime with Relaxation Tribometer: First Results on Lubricated Contacts by Simple Fluids and Emulsions

A novel method for friction measurements has recently been developed: the so-called “relaxation tribometer”. It is based on a lubricated contact submitted to a constant normal load, with one solid being supported by a 1-D mechanical oscillator, able to return to its equilibrium p...

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Autores principales:	Minori Kakizawa, Michel Belin, Jean Michel Martin
Formato:	article
Lenguaje:	EN
Publicado:	Japanese Society of Tribologists 2013
Materias:	viscous damping tribology friction coefficient vibration energy decay measurement cosmetic ingredient 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/2d351907b42f4152a4c05ea387daf85a
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spelling	oai:doaj.org-article:2d351907b42f4152a4c05ea387daf85a2021-11-05T09:24:31ZCharacterization of Friction Regime with Relaxation Tribometer: First Results on Lubricated Contacts by Simple Fluids and Emulsions1881-219810.2474/trol.8.135https://doaj.org/article/2d351907b42f4152a4c05ea387daf85a2013-01-01T00:00:00Zhttps://www.jstage.jst.go.jp/article/trol/8/1/8_135/_pdf/-char/enhttps://doaj.org/toc/1881-2198A novel method for friction measurements has recently been developed: the so-called “relaxation tribometer”. It is based on a lubricated contact submitted to a constant normal load, with one solid being supported by a 1-D mechanical oscillator, able to return to its equilibrium position through damped oscillations. The complete analysis of the time response of amplitude during elastic recovery is compared to a simple mechanical model. This allows us to identify and quantify precisely two different contributions of friction: the linear velocity-dependent contribution (typically “viscous-type” damping, by the parameter zeta), and the solid-like contribution (typically “solid” friction coefficient at zero speed, mu). The electric contact resistance (ECR) signal, which confirms the lubrication regime, is obtained by using an electric resistance detection device. In this study, tribological properties of pure glycerol (GL) and 1,3-buthylene glycol (13BG) are characterized and compared. The ECR signal of GL gives evidence for a fully fluid contact, which is characteristic for a full film lubrication regime. Interestingly, this lubrication regime is maintained when increasing the normal load from 50 to 500 mN. For 13BG, evidence is given for a boundary lubrication regime. Emulsions with GL and 13BG are also investigated. In addition, lubrication regimes of the emulsions are found to be close to those of the raw materials (GL and 13BG). The capabilities of this new technique are expected to bring new insights into friction measurement and characterization of contacts lubricated by complex fluids.Minori KakizawaMichel BelinJean Michel MartinJapanese Society of Tribologistsarticleviscous dampingtribologyfriction coefficientvibration energy decay measurementcosmetic ingredientPhysicsQC1-999Engineering (General). Civil engineering (General)TA1-2040Mechanical engineering and machineryTJ1-1570ChemistryQD1-999ENTribology Online, Vol 8, Iss 1, Pp 135-139 (2013)
institution	DOAJ
collection	DOAJ
language	EN
topic	viscous damping tribology friction coefficient vibration energy decay measurement cosmetic ingredient Physics QC1-999 Engineering (General). Civil engineering (General) TA1-2040 Mechanical engineering and machinery TJ1-1570 Chemistry QD1-999
spellingShingle	viscous damping tribology friction coefficient vibration energy decay measurement cosmetic ingredient Physics QC1-999 Engineering (General). Civil engineering (General) TA1-2040 Mechanical engineering and machinery TJ1-1570 Chemistry QD1-999 Minori Kakizawa Michel Belin Jean Michel Martin Characterization of Friction Regime with Relaxation Tribometer: First Results on Lubricated Contacts by Simple Fluids and Emulsions
description	A novel method for friction measurements has recently been developed: the so-called “relaxation tribometer”. It is based on a lubricated contact submitted to a constant normal load, with one solid being supported by a 1-D mechanical oscillator, able to return to its equilibrium position through damped oscillations. The complete analysis of the time response of amplitude during elastic recovery is compared to a simple mechanical model. This allows us to identify and quantify precisely two different contributions of friction: the linear velocity-dependent contribution (typically “viscous-type” damping, by the parameter zeta), and the solid-like contribution (typically “solid” friction coefficient at zero speed, mu). The electric contact resistance (ECR) signal, which confirms the lubrication regime, is obtained by using an electric resistance detection device. In this study, tribological properties of pure glycerol (GL) and 1,3-buthylene glycol (13BG) are characterized and compared. The ECR signal of GL gives evidence for a fully fluid contact, which is characteristic for a full film lubrication regime. Interestingly, this lubrication regime is maintained when increasing the normal load from 50 to 500 mN. For 13BG, evidence is given for a boundary lubrication regime. Emulsions with GL and 13BG are also investigated. In addition, lubrication regimes of the emulsions are found to be close to those of the raw materials (GL and 13BG). The capabilities of this new technique are expected to bring new insights into friction measurement and characterization of contacts lubricated by complex fluids.
format	article
author	Minori Kakizawa Michel Belin Jean Michel Martin
author_facet	Minori Kakizawa Michel Belin Jean Michel Martin
author_sort	Minori Kakizawa
title	Characterization of Friction Regime with Relaxation Tribometer: First Results on Lubricated Contacts by Simple Fluids and Emulsions
title_short	Characterization of Friction Regime with Relaxation Tribometer: First Results on Lubricated Contacts by Simple Fluids and Emulsions
title_full	Characterization of Friction Regime with Relaxation Tribometer: First Results on Lubricated Contacts by Simple Fluids and Emulsions
title_fullStr	Characterization of Friction Regime with Relaxation Tribometer: First Results on Lubricated Contacts by Simple Fluids and Emulsions
title_full_unstemmed	Characterization of Friction Regime with Relaxation Tribometer: First Results on Lubricated Contacts by Simple Fluids and Emulsions
title_sort	characterization of friction regime with relaxation tribometer: first results on lubricated contacts by simple fluids and emulsions
publisher	Japanese Society of Tribologists
publishDate	2013
url	https://doaj.org/article/2d351907b42f4152a4c05ea387daf85a
work_keys_str_mv	AT minorikakizawa characterizationoffrictionregimewithrelaxationtribometerfirstresultsonlubricatedcontactsbysimplefluidsandemulsions AT michelbelin characterizationoffrictionregimewithrelaxationtribometerfirstresultsonlubricatedcontactsbysimplefluidsandemulsions AT jeanmichelmartin characterizationoffrictionregimewithrelaxationtribometerfirstresultsonlubricatedcontactsbysimplefluidsandemulsions
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Characterization of Friction Regime with Relaxation Tribometer: First Results on Lubricated Contacts by Simple Fluids and Emulsions

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