Applying the digital image correlation method to fretting contact for slip measurement

Fretting is a consequence of small relative oscillatory movement between contacting parts and can cause serious damage to machine components. This paper describes the implementation of digital image correlation method to a fretting test device to measure the relative movement, i.e. slip, between the...

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Bibliographic Details
Published in:Proceedings of the Institution of Mechanical Engineers. Part J, Journal of engineering tribology Journal of engineering tribology, 2017-04, Vol.231 (4), p.509-519
Main Authors: Juoksukangas, J, Lehtovaara, A, Mäntylä, A
Format: Article
Language:English
Subjects:
Contact
Correlation
Digital imaging
Fatigue failure
Fatigue tests
Fretting
High strength steels
Materials fatigue
Mechanical engineering
Quenching and tempering
Slip
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Summary:Fretting is a consequence of small relative oscillatory movement between contacting parts and can cause serious damage to machine components. This paper describes the implementation of digital image correlation method to a fretting test device to measure the relative movement, i.e. slip, between the contacting parts. A complete contact fretting test device is used, in which two flat fretting pads are clamped against a cyclically loaded flat fretting specimen. The material used is quenched and tempered steel. Digital image correlation, equipped with a microscope, is employed to measure the local displacement field at the contact edge. The micrometer-level slip amplitude and the length of the slip region are determined at specific time intervals during a fretting fatigue test. Both of these quantities appear to decrease and stabilize during fretting fatigue testing. The slip decreases markedly during the initial cycles.
ISSN:1350-6501
2041-305X
DOI:10.1177/1350650115601695