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Janne Juoksukangas, Verner Nurmi, Jouko Hintikka, Minnamari Vippola, Arto Lehtovaara, Antti Mäntylä, Joona Vaara, Tero Frondelius, Characterization of cracks formed in large flat-on-flat fretting contact, International Journal of Fatigue, Volume 124, 2019, Pages 361-370, ISSN 0142-1123, https://doi.org/10.1016/j.ijfatigue.2019.03.004

Characterization of cracks formed in large flat-on-flat fretting contact

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Author: Juoksukangas, Janne1; Nurmi, Verner1; Hintikka, Jouko2;
Organizations: 1Tribology and Machine Elements, Materials Science and Environmental Engineering, Faculty of Engineering and Natural Sciences, P.O. Box 589, 33014 Tampere University, Tampere, Finland
2R&D and Engineering, Wärtsilä, P.O. Box 244, 65101 Vaasa, Finland
3Materials Characterization, Materials Science and Environmental Engineering, Faculty of Engineering and Natural Sciences, P.O. Box 589, 33014 Tampere University, Tampere, Finland
4University of Oulu, Erkki Koiso-Kanttilan katu 1, 90014 Oulu, Finland
Format: article
Version: published version
Access: open
Online Access: PDF Full Text (PDF, 17.4 MB)
Persistent link: http://urn.fi/urn:nbn:fi-fe2019071022973
Language: English
Published: Elsevier, 2019
Publish Date: 2019-07-10
Description:

Abstract

Fretting fatigue may lead to severe damage in machines. Adhesive material transfer spots in millimeter scale have previously been observed on fretted surfaces, which have been related to cracking. In this study, fretting-induced cracks formed in a large annular flat-on-flat contact are characterized. Optical and scanning electron microscopy of the fretting scar cross-section samples of self-mated quenched and tempered steel specimens revealed severe cracking and deformed microstructure. Two major cracks typically formed around an adhesion spot, which propagated at an oblique angle, regardless of the test parameters used. Millimeter-scale cracks were observed already within a few thousand loading cycles.

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Series: International journal of fatigue
ISSN: 0142-1123
ISSN-E: 1879-3452
ISSN-L: 0142-1123
Volume: 124
Pages: 361 - 370
DOI: 10.1016/j.ijfatigue.2019.03.004
OADOI: https://oadoi.org/10.1016/j.ijfatigue.2019.03.004
Type of Publication: A1 Journal article – refereed
Field of Science: 214 Mechanical engineering
216 Materials engineering
Subjects:
Crack formation
Cracks
Damage
Fretting fatigue
Microscopy
Article
Funding: The authors are grateful for the financial support provided by Business Finland Oy (former Tekes) in the form of research projects WIMMA Dnro 1566/31/2015 and MaNuMiES (Dnro 3361/31/2015) and Wärtsilä Finland Oy.
Copyright information: © 2019 The Authors. Published by Elsevier Ltd. This is an open access article under the CC BY license (http://creativecommons.org/licenses/BY/4.0/).
  https://creativecommons.org/licenses/by/4.0/