Impact of surface topography on torsional fretting wear of the blade bearing interface under different lubrication conditions

Wenlong Lu, Po Zhang, Wenzheng Zhai, Jian Wang, Xiaojun Liu, Xiangqian Jiang

Research output: Contribution to journalArticle

Abstract

Torsional fretting wear properties of the blade bearing interface were studied with varying initial surface morphologies. Tests were carried out with flat on flat contact, in the gross slip regime and under different lubrication conditions. Results show that with the increase of surface roughness, the friction torque decreases and increases respectively under the lubricated and dry fretting conditions. The wear volume was higher for the rougher surface in all the tests. In oil and artificial seawater, the wear mechanism was mainly abrasive wear; under dry fretting, it was a combination of abrasion, adhesion and oxidation. Based on the surface topography effect on the pitch adjustment flexibility and dynamic sealing performance of the CPP, surface topography of the blade bearing interface was optimized to be with the texture direction perpendicular to the relative movement direction, and S a in the range of 0.8 to 1.2 μm.

Original languageEnglish
Article number015017
Number of pages11
JournalSurface Topography: Metrology and Properties
Volume7
Issue number1
DOIs
Publication statusPublished - 25 Feb 2019

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Bearings (structural)
fretting
Surface topography
lubrication
blades
Lubrication
topography
Wear of materials
Abrasion
Seawater
Surface morphology
abrasion
sealing
Oils
abrasives
Adhesion
Torque
Textures
Surface roughness
Friction

Cite this

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title = "Impact of surface topography on torsional fretting wear of the blade bearing interface under different lubrication conditions",
abstract = "Torsional fretting wear properties of the blade bearing interface were studied with varying initial surface morphologies. Tests were carried out with flat on flat contact, in the gross slip regime and under different lubrication conditions. Results show that with the increase of surface roughness, the friction torque decreases and increases respectively under the lubricated and dry fretting conditions. The wear volume was higher for the rougher surface in all the tests. In oil and artificial seawater, the wear mechanism was mainly abrasive wear; under dry fretting, it was a combination of abrasion, adhesion and oxidation. Based on the surface topography effect on the pitch adjustment flexibility and dynamic sealing performance of the CPP, surface topography of the blade bearing interface was optimized to be with the texture direction perpendicular to the relative movement direction, and S a in the range of 0.8 to 1.2 μm.",
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Impact of surface topography on torsional fretting wear of the blade bearing interface under different lubrication conditions. / Lu, Wenlong; Zhang, Po; Zhai, Wenzheng; Wang, Jian; Liu, Xiaojun; Jiang, Xiangqian.

In: Surface Topography: Metrology and Properties, Vol. 7, No. 1, 015017, 25.02.2019.

Research output: Contribution to journalArticle

TY - JOUR

T1 - Impact of surface topography on torsional fretting wear of the blade bearing interface under different lubrication conditions

AU - Lu, Wenlong

AU - Zhang, Po

AU - Zhai, Wenzheng

AU - Wang, Jian

AU - Liu, Xiaojun

AU - Jiang, Xiangqian

PY - 2019/2/25

Y1 - 2019/2/25

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AB - Torsional fretting wear properties of the blade bearing interface were studied with varying initial surface morphologies. Tests were carried out with flat on flat contact, in the gross slip regime and under different lubrication conditions. Results show that with the increase of surface roughness, the friction torque decreases and increases respectively under the lubricated and dry fretting conditions. The wear volume was higher for the rougher surface in all the tests. In oil and artificial seawater, the wear mechanism was mainly abrasive wear; under dry fretting, it was a combination of abrasion, adhesion and oxidation. Based on the surface topography effect on the pitch adjustment flexibility and dynamic sealing performance of the CPP, surface topography of the blade bearing interface was optimized to be with the texture direction perpendicular to the relative movement direction, and S a in the range of 0.8 to 1.2 μm.

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