Relationship between temperature distribution in EHL film and dimple formation

Kazuyuki Yagi; Keiji Kyogoku; Tsunamitsu Nakahara

doi:10.1115/trib2004-64073

Relationship between temperature distribution in EHL film and dimple formation

Kazuyuki Yagi, Keiji Kyogoku, Tsunamitsu Nakahara

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

3 Citations (Scopus)

Abstract

This paper describes an experimental study on dimple formations under elastohydrodynamic lubrication (EHL) conditions. The oil film thickness between a ball surface and a sapphire disk was measured using optical interferometry and the temperatures of both the surfaces and of the oil film averaged across it were measured by an improved infrared emission technique. It was found that temperature profile across the oil film varies abruptly along the direction of the oil film thickness 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 above 400 K and thus the phase transition of the oil from liquid to glass may not occur.

Original language	English
Title of host publication	Proceedings of the ASME/STLE International Joint Tribology Conference, IJTC 2004
Publisher	American Society of Mechanical Engineers
Pages	459-468
Number of pages	10
Edition	PART A
ISBN (Print)	0791841812, 9780791841815
DOIs	https://doi.org/10.1115/trib2004-64073
Publication status	Published - 2004
Externally published	Yes
Event	2004 ASME/STLE International Joint Tribology Conference - Long Beach, CA, United States Duration: Oct 24 2004 → Oct 27 2004

Publication series

Name	Proceedings of the ASME/STLE International Joint Tribology Conference, IJTC 2004
Number	PART A

Other

Other	2004 ASME/STLE International Joint Tribology Conference
Country/Territory	United States
City	Long Beach, CA
Period	10/24/04 → 10/27/04

All Science Journal Classification (ASJC) codes

Engineering(all)

Access to Document

10.1115/trib2004-64073

Cite this

Yagi, K., Kyogoku, K., & Nakahara, T. (2004). Relationship between temperature distribution in EHL film and dimple formation. In Proceedings of the ASME/STLE International Joint Tribology Conference, IJTC 2004 (PART A ed., pp. 459-468). [TRIB2004-64073] (Proceedings of the ASME/STLE International Joint Tribology Conference, IJTC 2004; No. PART A). American Society of Mechanical Engineers. https://doi.org/10.1115/trib2004-64073

Relationship between temperature distribution in EHL film and dimple formation. / Yagi, Kazuyuki; Kyogoku, Keiji; Nakahara, Tsunamitsu.
Proceedings of the ASME/STLE International Joint Tribology Conference, IJTC 2004. PART A. ed. American Society of Mechanical Engineers, 2004. p. 459-468 TRIB2004-64073 (Proceedings of the ASME/STLE International Joint Tribology Conference, IJTC 2004; No. PART A).

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

Yagi, K, Kyogoku, K & Nakahara, T 2004, Relationship between temperature distribution in EHL film and dimple formation. in Proceedings of the ASME/STLE International Joint Tribology Conference, IJTC 2004. PART A edn, TRIB2004-64073, Proceedings of the ASME/STLE International Joint Tribology Conference, IJTC 2004, no. PART A, American Society of Mechanical Engineers, pp. 459-468, 2004 ASME/STLE International Joint Tribology Conference, Long Beach, CA, United States, 10/24/04. https://doi.org/10.1115/trib2004-64073

Yagi K, Kyogoku K, Nakahara T. Relationship between temperature distribution in EHL film and dimple formation. In Proceedings of the ASME/STLE International Joint Tribology Conference, IJTC 2004. PART A ed. American Society of Mechanical Engineers. 2004. p. 459-468. TRIB2004-64073. (Proceedings of the ASME/STLE International Joint Tribology Conference, IJTC 2004; PART A). doi: 10.1115/trib2004-64073

Yagi, Kazuyuki ; Kyogoku, Keiji ; Nakahara, Tsunamitsu. / Relationship between temperature distribution in EHL film and dimple formation. Proceedings of the ASME/STLE International Joint Tribology Conference, IJTC 2004. PART A. ed. American Society of Mechanical Engineers, 2004. pp. 459-468 (Proceedings of the ASME/STLE International Joint Tribology Conference, IJTC 2004; PART A).

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abstract = "This paper describes an experimental study on dimple formations under elastohydrodynamic lubrication (EHL) conditions. The oil film thickness between a ball surface and a sapphire disk was measured using optical interferometry and the temperatures of both the surfaces and of the oil film averaged across it were measured by an improved infrared emission technique. It was found that temperature profile across the oil film varies abruptly along the direction of the oil film thickness 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 above 400 K and thus the phase transition of the oil from liquid to glass may not occur.",

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AB - This paper describes an experimental study on dimple formations under elastohydrodynamic lubrication (EHL) conditions. The oil film thickness between a ball surface and a sapphire disk was measured using optical interferometry and the temperatures of both the surfaces and of the oil film averaged across it were measured by an improved infrared emission technique. It was found that temperature profile across the oil film varies abruptly along the direction of the oil film thickness 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 above 400 K and thus the phase transition of the oil from liquid to glass may not occur.

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Relationship between temperature distribution in EHL film and dimple formation

Abstract

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