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Elastic Waves of a Single Elasto-Hydrodynamically Lubricated Contact
Luleå tekniska universitet, Institutionen för teknikvetenskap och matematik, Maskinelement.
Luleå tekniska universitet, Institutionen för teknikvetenskap och matematik, Maskinelement.ORCID-id: 0000-0003-3157-4632
Luleå tekniska universitet, Institutionen för teknikvetenskap och matematik, Maskinelement.ORCID-id: 0000-0001-9110-2819
Rekke forfattare: 32017 (engelsk)Inngår i: Tribology letters, ISSN 1023-8883, E-ISSN 1573-2711, Vol. 65, nr 1, artikkel-id 5Artikkel i tidsskrift (Fagfellevurdert) Published
Abstract [en]

Elastic waves are widely used for condition monitoring of rolling element bearings through vibration or acoustic emission measurements . While vibration signals are understood to a high degree due to many scientific investigations as well as a long history of usage in the field, acoustic emission signals of rolling element bearings are poorly understood. Therefore, this investigation presents simulation studies and measurements of a single elasto-hydrodynamically lubricated (EHL) contact. In this investigation the EHL contact is a ball bouncing on a lubricated plate. The simulation based on Green’s function and the measurements based on a accelerometer to some extent agree. A shift of zero frequencies towards higher frequencies when compared to Hertzian reference measurements was determined for an infinite plate setup. Taking boundary restrictions into account, elastic waves of a Hertzian contact and an EHL contact only differ by a damping of higher resonances which is most likely caused by the EHL film.

sted, utgiver, år, opplag, sider
Springer, 2017. Vol. 65, nr 1, artikkel-id 5
Emneord [en]
EHL contact, EHL, Hertz contact, Elastic waves, Acoustic emission, Green’s function, Ball impact, Bouncing ball
HSV kategori
Forskningsprogram
Maskinelement
Identifikatorer
URN: urn:nbn:se:ltu:diva-60962DOI: 10.1007/s11249-016-0785-5ISI: 000397039300005Scopus ID: 2-s2.0-85000443041OAI: oai:DiVA.org:ltu-60962DiVA, id: diva2:1052720
Forskningsfinansiär
VINNOVA, 198503
Merknad

Validerad; 2017; Nivå 2; 2016-12-19 (andbra)

Tilgjengelig fra: 2016-12-07 Laget: 2016-12-07 Sist oppdatert: 2018-12-14bibliografisk kontrollert

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Schnabel, StephanMarklund, PärLarsson, Roland

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