Temperature measurements of both sliding surfaces and an estimation of temperature profile across film thickness under EHL conditions

Kazuyuki Yagi, Keiji Kyogoku, Tsunamitsu Nakahara

Research output: Contribution to journalArticle

Abstract

An experimental study of temperature measurements of both sliding surfaces and estimation of film temperature profile across film thickness under point EHL conditions was carried out. An increase of a speed difference between both sliding surfaces resulted in a larger temperature difference between both sliding surfaces, which led to a change of the form of temperature distribution. The temperature of slower surface was higher than that of the faster surface as the velocity difference increased, and that the temperature gradient across film thickness also existed at the inlet region because the heat generated at the contact region was transferred back from the slower surface to this region. At a slip ratio of 0.6:1, the temperature distribution on both sliding surfaces did not show any significant difference, either in the forms or in their magnitudes, When the temperature distribution on both sliding surfaces changed, the temperature distribution in oil films varied as well. At slip ratios of 1:1 and 1.8:1, a temperature gradient in the direction of the clearance occurred and the highest temperature showed a local rise close to the outlet region at slip ratios of 0.6:1 and 1:1, but a slip ratio of 1.8:1, if shifted closer to the center of the contact zone on the disk surface.

Original languageEnglish
Pages (from-to)165-176
Number of pages12
JournalJapanese Journal of Tribology
Volume47
Issue number2
Publication statusPublished - Dec 1 2002
Externally publishedYes

Fingerprint

Temperature measurement
Film thickness
Temperature distribution
Temperature
Thermal gradients
Oils

All Science Journal Classification (ASJC) codes

  • Mechanics of Materials
  • Mechanical Engineering
  • Surfaces, Coatings and Films
  • Materials Chemistry

Cite this

Temperature measurements of both sliding surfaces and an estimation of temperature profile across film thickness under EHL conditions. / Yagi, Kazuyuki; Kyogoku, Keiji; Nakahara, Tsunamitsu.

In: Japanese Journal of Tribology, Vol. 47, No. 2, 01.12.2002, p. 165-176.

Research output: Contribution to journalArticle

@article{e50c2380f4454c32bb1fc84b5bac8e1e,
title = "Temperature measurements of both sliding surfaces and an estimation of temperature profile across film thickness under EHL conditions",
abstract = "An experimental study of temperature measurements of both sliding surfaces and estimation of film temperature profile across film thickness under point EHL conditions was carried out. An increase of a speed difference between both sliding surfaces resulted in a larger temperature difference between both sliding surfaces, which led to a change of the form of temperature distribution. The temperature of slower surface was higher than that of the faster surface as the velocity difference increased, and that the temperature gradient across film thickness also existed at the inlet region because the heat generated at the contact region was transferred back from the slower surface to this region. At a slip ratio of 0.6:1, the temperature distribution on both sliding surfaces did not show any significant difference, either in the forms or in their magnitudes, When the temperature distribution on both sliding surfaces changed, the temperature distribution in oil films varied as well. At slip ratios of 1:1 and 1.8:1, a temperature gradient in the direction of the clearance occurred and the highest temperature showed a local rise close to the outlet region at slip ratios of 0.6:1 and 1:1, but a slip ratio of 1.8:1, if shifted closer to the center of the contact zone on the disk surface.",
author = "Kazuyuki Yagi and Keiji Kyogoku and Tsunamitsu Nakahara",
year = "2002",
month = "12",
day = "1",
language = "English",
volume = "47",
pages = "165--176",
journal = "Japanese Journal of Tribology",
issn = "1045-7828",
publisher = "Allerton Press Inc.",
number = "2",

}

TY - JOUR

T1 - Temperature measurements of both sliding surfaces and an estimation of temperature profile across film thickness under EHL conditions

AU - Yagi, Kazuyuki

AU - Kyogoku, Keiji

AU - Nakahara, Tsunamitsu

PY - 2002/12/1

Y1 - 2002/12/1

N2 - An experimental study of temperature measurements of both sliding surfaces and estimation of film temperature profile across film thickness under point EHL conditions was carried out. An increase of a speed difference between both sliding surfaces resulted in a larger temperature difference between both sliding surfaces, which led to a change of the form of temperature distribution. The temperature of slower surface was higher than that of the faster surface as the velocity difference increased, and that the temperature gradient across film thickness also existed at the inlet region because the heat generated at the contact region was transferred back from the slower surface to this region. At a slip ratio of 0.6:1, the temperature distribution on both sliding surfaces did not show any significant difference, either in the forms or in their magnitudes, When the temperature distribution on both sliding surfaces changed, the temperature distribution in oil films varied as well. At slip ratios of 1:1 and 1.8:1, a temperature gradient in the direction of the clearance occurred and the highest temperature showed a local rise close to the outlet region at slip ratios of 0.6:1 and 1:1, but a slip ratio of 1.8:1, if shifted closer to the center of the contact zone on the disk surface.

AB - An experimental study of temperature measurements of both sliding surfaces and estimation of film temperature profile across film thickness under point EHL conditions was carried out. An increase of a speed difference between both sliding surfaces resulted in a larger temperature difference between both sliding surfaces, which led to a change of the form of temperature distribution. The temperature of slower surface was higher than that of the faster surface as the velocity difference increased, and that the temperature gradient across film thickness also existed at the inlet region because the heat generated at the contact region was transferred back from the slower surface to this region. At a slip ratio of 0.6:1, the temperature distribution on both sliding surfaces did not show any significant difference, either in the forms or in their magnitudes, When the temperature distribution on both sliding surfaces changed, the temperature distribution in oil films varied as well. At slip ratios of 1:1 and 1.8:1, a temperature gradient in the direction of the clearance occurred and the highest temperature showed a local rise close to the outlet region at slip ratios of 0.6:1 and 1:1, but a slip ratio of 1.8:1, if shifted closer to the center of the contact zone on the disk surface.

UR - http://www.scopus.com/inward/record.url?scp=0036883239&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=0036883239&partnerID=8YFLogxK

M3 - Article

AN - SCOPUS:0036883239

VL - 47

SP - 165

EP - 176

JO - Japanese Journal of Tribology

JF - Japanese Journal of Tribology

SN - 1045-7828

IS - 2

ER -