Running-in in fretting, transition from near-stable friction regime to gross sliding |
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Author: | Hintikka, Jouko1,2; Mäntylä, Antti1; Vaara, Joona1; |
Organizations: |
1R&D and Engineering, Wärtsilä, P.O. Box 244, 65101 Vaasa, Finland 2Tribology and Machine Elements, Faculty of Engineering and Natural Sciences, Tampere University, P.O. Box 589, 33101 Tampere, Finland |
Format: | article |
Version: | accepted version |
Access: | embargoed |
Persistent link: | http://urn.fi/urn:nbn:fi-fe2020051128310 |
Language: | English |
Published: |
Elsevier,
2020
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Publish Date: | 2021-11-21 |
Description: |
AbstractIt has been shown that quenched and tempered steel in gross-sliding fretting conditions, with tens of microns of slip amplitude, leads to fretting induced cracking and high and non-Coulomb friction. At low tangential load levels, there was only insignificant cracking. However, the running condition tends to change from stick to gross-sliding with a slip amplitude of a few micrometres. In this study, novel two-phase fretting experiments were done where quenched and tempered steel contact is run first at low loads that are initially in stick (running-in phase), followed by a gross-sliding phase with a slip amplitude of 35 μm. The results show that gross-sliding phase friction was reduced and the fretting induced cracks were shorter when the running-in phase was done at high enough load level and lasted more than 10⁶ load cycles. At the highest running-in load levels, the resulting crack lengths were approximately halved in comparison to experiments without running-in, and it was possible to achieve nearly ideal Coulomb friction in the gross-sliding phase when the running-in duration was 10.2 × 10⁶ load cycles. It is concluded that it is possible to control fretting-induced friction and cracking by carefully controlled running-in. see all
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Series: |
Tribology international |
ISSN: | 0301-679X |
ISSN-E: | 1879-2464 |
ISSN-L: | 0301-679X |
Volume: | 143 |
Article number: | 106073 |
DOI: | 10.1016/j.triboint.2019.106073 |
OADOI: | https://oadoi.org/10.1016/j.triboint.2019.106073 |
Type of Publication: |
A1 Journal article – refereed |
Field of Science: |
214 Mechanical engineering 216 Materials engineering |
Subjects: | |
Funding: |
This study was conducted as a part of the MaNuMiES (Dnro 3361/31/2015) and WIMMA (Dnro 1566/31/2015) research projects. The authors are grateful for the financial support provided by Business Finland Oy (former Tekes), Wärtsilä Finland Oy, Agco Power Oy, Finland and Global Boiler Works Oy, Finland . |
Copyright information: |
© 2019 Elsevier Ltd. This manuscript version is made available under the CC-BY-NC-ND 4.0 license http://creativecommons.org/licenses/by-nc-nd/4.0/. |
https://creativecommons.org/licenses/by-nc-nd/4.0/ |