Detail publikace
Mapování tloušťky mazacího filmu v náhradách kyčelního kloubu
BOSÁK, D. LAŠTŮVKA, J. VRBKA, M. NÁVRAT, T. HARTL, M. KŘUPKA, I.
Český název
Mapování tloušťky mazacího filmu v náhradách kyčelního kloubu
Anglický název
Mapping of lubricating film thickness in human hip joint replacements
Typ
článek ve sborníku ve WoS nebo Scopus
Jazyk
en
Originální abstrakt
This paper describes experimental mapping of lubricating film thickness and mechanism of its forming in contact of CoCrMo femoral head with a diameter of 28 mm and a glass disc with presence of bovine serum as a substitute of synovial fluid occurred in a natural joint. The contact area was illuminated by a xenon lamp and recorded by a high-speed camera. The load applied to the contact area was 5 N corresponding with the contact pressure of 271 MPa. Obtained data was evaluated by a thin film colorimetric interferometry. A pure rolling and partial sliding measurements were examined. From observed interferograms is apparent the deposition of proteins to the glass disc and femoral head surfaces, denaturation and formation of protein aggregations affecting the residual lubricating film thickness. The basic mechanisms of protein film forming were brought out and it is apparent that forming of protein lubricating film is a complex mechanism containing more influences.
Český abstrakt
Tento článek se zabývá mapováním tloušťky mazacího filmu v umělých náhradách kyčelního kloubu pomocí experimentální metody založené na kolorimetrické interferometrii velmi tenkých mazacích filmů.
Anglický abstrakt
This paper describes experimental mapping of lubricating film thickness and mechanism of its forming in contact of CoCrMo femoral head with a diameter of 28 mm and a glass disc with presence of bovine serum as a substitute of synovial fluid occurred in a natural joint. The contact area was illuminated by a xenon lamp and recorded by a high-speed camera. The load applied to the contact area was 5 N corresponding with the contact pressure of 271 MPa. Obtained data was evaluated by a thin film colorimetric interferometry. A pure rolling and partial sliding measurements were examined. From observed interferograms is apparent the deposition of proteins to the glass disc and femoral head surfaces, denaturation and formation of protein aggregations affecting the residual lubricating film thickness. The basic mechanisms of protein film forming were brought out and it is apparent that forming of protein lubricating film is a complex mechanism containing more influences.
Klíčová slova česky
Biotribologie, Hovězí sérum, Tloušťka filmu, Umělý kyčelní kloub, Kolorimetrická interferometrie
Klíčová slova anglicky
Biotribology, Bovine serum, Film thickness, Artificial hip joint, Colorimetric interferometry
Rok RIV
2012
Vydáno
12.09.2012
Nakladatel
Brno University of Technology
Místo
Brno
ISBN
978-80-214-4533-8
Kniha
53rd International Conference of Machine Design Departments
Číslo edice
1
Strany od–do
45–52
Počet stran
8
BIBTEX
@inproceedings{BUT99014,
author="Dalibor {Bosák} and Jan {Laštůvka} and Martin {Vrbka} and Tomáš {Návrat} and Martin {Hartl} and Ivan {Křupka},
title="Mapping of lubricating film thickness in human hip joint replacements",
booktitle="53rd International Conference of Machine Design Departments",
year="2012",
month="September",
pages="45--52",
publisher="Brno University of Technology",
address="Brno",
isbn="978-80-214-4533-8"
}