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

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Yksityiskohdat

AlkuperäiskieliEnglanti
Sivumäärä11
JulkaisuProceedings of the institution of Mechanical Engineers Part J: Journal of Engineering Tribology
Vuosikerta231
Numero4
Varhainen verkossa julkaisun päivämäärä20 elokuuta 2015
DOI - pysyväislinkit
TilaJulkaistu - 2015
OKM-julkaisutyyppiA1 Alkuperäisartikkeli

Tiivistelmä

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.

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