Relationship between temperature distribution in EHL film and dimple formation

Kazuyuki Yagi, Keiji Kyogoku, Tsunamitsu Nakahara

Research output: Contribution to journalArticle

44 Citations (Scopus)

Abstract

This paper describes an experimental study on dimple formation under elastohydrodynamic lubrication (EHL) conditions. The oil film thickness between a ball surface and a glass disk was measured using optical interferometry, and the temperatures of both the surfaces and of the oil film averaged across it were measured using an infrared emission technique. It was found that the temperature profile across the oil film varies abruptly along the sliding direction, and the Couette flow decreases due to the viscosity wedge action as the oil flow is close to the dimple zone. The maximum temperature rise in the dimple zone sometimes reached over 400 K, thus, the phase transition of the oil from liquid to glass may not occur.

Original languageEnglish
Pages (from-to)658-665
Number of pages8
JournalJournal of Tribology
Volume127
Issue number3
DOIs
Publication statusPublished - Jul 1 2005
Externally publishedYes

Fingerprint

elastohydrodynamics
Elastohydrodynamic lubrication
lubrication
Oils
Temperature distribution
temperature distribution
oils
Glass
glass
Couette flow
Interferometry
temperature profiles
Temperature
wedges
Film thickness
sliding
balls
interferometry
film thickness
Phase transitions

All Science Journal Classification (ASJC) codes

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

Cite this

Relationship between temperature distribution in EHL film and dimple formation. / Yagi, Kazuyuki; Kyogoku, Keiji; Nakahara, Tsunamitsu.

In: Journal of Tribology, Vol. 127, No. 3, 01.07.2005, p. 658-665.

Research output: Contribution to journalArticle

Yagi, Kazuyuki ; Kyogoku, Keiji ; Nakahara, Tsunamitsu. / Relationship between temperature distribution in EHL film and dimple formation. In: Journal of Tribology. 2005 ; Vol. 127, No. 3. pp. 658-665.
@article{3fd5416b916d4933b63669f38a7e412a,
title = "Relationship between temperature distribution in EHL film and dimple formation",
abstract = "This paper describes an experimental study on dimple formation under elastohydrodynamic lubrication (EHL) conditions. The oil film thickness between a ball surface and a glass disk was measured using optical interferometry, and the temperatures of both the surfaces and of the oil film averaged across it were measured using an infrared emission technique. It was found that the temperature profile across the oil film varies abruptly along the sliding direction, and the Couette flow decreases due to the viscosity wedge action as the oil flow is close to the dimple zone. The maximum temperature rise in the dimple zone sometimes reached over 400 K, thus, the phase transition of the oil from liquid to glass may not occur.",
author = "Kazuyuki Yagi and Keiji Kyogoku and Tsunamitsu Nakahara",
year = "2005",
month = "7",
day = "1",
doi = "10.1115/1.1866164",
language = "English",
volume = "127",
pages = "658--665",
journal = "Journal of Tribology",
issn = "0742-4787",
publisher = "American Society of Mechanical Engineers(ASME)",
number = "3",

}

TY - JOUR

T1 - Relationship between temperature distribution in EHL film and dimple formation

AU - Yagi, Kazuyuki

AU - Kyogoku, Keiji

AU - Nakahara, Tsunamitsu

PY - 2005/7/1

Y1 - 2005/7/1

N2 - This paper describes an experimental study on dimple formation under elastohydrodynamic lubrication (EHL) conditions. The oil film thickness between a ball surface and a glass disk was measured using optical interferometry, and the temperatures of both the surfaces and of the oil film averaged across it were measured using an infrared emission technique. It was found that the temperature profile across the oil film varies abruptly along the sliding direction, and the Couette flow decreases due to the viscosity wedge action as the oil flow is close to the dimple zone. The maximum temperature rise in the dimple zone sometimes reached over 400 K, thus, the phase transition of the oil from liquid to glass may not occur.

AB - This paper describes an experimental study on dimple formation under elastohydrodynamic lubrication (EHL) conditions. The oil film thickness between a ball surface and a glass disk was measured using optical interferometry, and the temperatures of both the surfaces and of the oil film averaged across it were measured using an infrared emission technique. It was found that the temperature profile across the oil film varies abruptly along the sliding direction, and the Couette flow decreases due to the viscosity wedge action as the oil flow is close to the dimple zone. The maximum temperature rise in the dimple zone sometimes reached over 400 K, thus, the phase transition of the oil from liquid to glass may not occur.

UR - http://www.scopus.com/inward/record.url?scp=22244477765&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=22244477765&partnerID=8YFLogxK

U2 - 10.1115/1.1866164

DO - 10.1115/1.1866164

M3 - Article

AN - SCOPUS:22244477765

VL - 127

SP - 658

EP - 665

JO - Journal of Tribology

JF - Journal of Tribology

SN - 0742-4787

IS - 3

ER -