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

Research output: Contribution to journalArticleScientificpeer-review

Details

Original languageEnglish
Number of pages11
JournalProceedings of the institution of Mechanical Engineers Part J: Journal of Engineering Tribology
Volume231
Issue number4
Early online date20 Aug 2015
DOIs
Publication statusPublished - 2015
Publication typeA1 Journal article-refereed

Abstract

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.

Publication forum classification

Field of science, Statistics Finland