On the Relation between Friction Increase and Grease Thickener Entraining on a Border of Mixed EHL Lubrication

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216305%3A26210%2F20%3APU139963" target="_blank" >RIV/00216305:26210/20:PU139963 - isvavai.cz</a>

Výsledek na webu

<a href="https://www.mdpi.com/2075-4442/8/2/12/pdf" target="_blank" >https://www.mdpi.com/2075-4442/8/2/12/pdf</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.3390/lubricants8020012" target="_blank" >10.3390/lubricants8020012</a>

Jazyk výsledku

angličtina

Název v původním jazyce

On the Relation between Friction Increase and Grease Thickener Entraining on a Border of Mixed EHL Lubrication

Popis výsledku v původním jazyce

This paper deals with an experimental study of film thickness and friction of commercial-grade grease and its base oil in a highly loaded contact. In-situ measurements were conducted for two surface textures on a ball-on-disc optical tribometer at the border of mixed lubrication. At high speeds, the film thickness and the friction of grease correspond with the base oil, while, the thickener enters the contact area and locally affects the film thickness and friction at low speeds. It was found out that the thickener starts to enter the contact area approximately at the same speed when the base oil friction increases on Stribeck curve but without direct solid to solid contact. It indicates that both effects can have the same origin. Change of lubricant flow in contact inlet area was discussed as a possible explanation.

Název v anglickém jazyce

On the Relation between Friction Increase and Grease Thickener Entraining on a Border of Mixed EHL Lubrication

Popis výsledku anglicky

This paper deals with an experimental study of film thickness and friction of commercial-grade grease and its base oil in a highly loaded contact. In-situ measurements were conducted for two surface textures on a ball-on-disc optical tribometer at the border of mixed lubrication. At high speeds, the film thickness and the friction of grease correspond with the base oil, while, the thickener enters the contact area and locally affects the film thickness and friction at low speeds. It was found out that the thickener starts to enter the contact area approximately at the same speed when the base oil friction increases on Stribeck curve but without direct solid to solid contact. It indicates that both effects can have the same origin. Change of lubricant flow in contact inlet area was discussed as a possible explanation.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

20301 - Mechanical engineering

Projekt

<a href="/cs/project/GA17-23235S" target="_blank" >GA17-23235S: Vliv tepelných vlastností kontaktních těles na tok maziva v Hertzových nehladkých kontaktech</a><br>

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Rok uplatnění

2020

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

Lubricants

ISSN

2075-4442

e-ISSN

—

Svazek periodika

8

Číslo periodika v rámci svazku

2

Stát vydavatele periodika

CH - Švýcarská konfederace

Počet stran výsledku

11

Strana od-do

1-11

Kód UT WoS článku

000519110900007

EID výsledku v databázi Scopus

2-s2.0-85080062452