Detail publikace

MAPOVÁNÍ MAZACÍHO FILMU V NÁHRADÁCH KYČELNÍHO KLOUBU

BOSÁK, D. LAŠTŮVKA, J. VRBKA, M. NÁVRAT, T. HARTL, M. KŘUPKA, I.

Český název

MAPOVÁNÍ MAZACÍHO FILMU V NÁHRADÁCH KYČELNÍHO KLOUBU

Anglický název

MAPPING OF LUBRICATING FILM THICKNESS IN HUMAN HIP JOINT REPLACEMENTS

Typ

článek v časopise - ostatní, Jost

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

Uvedený článek se zabývá experimentální analýzou tloušťky mazacího filmu v náhradách kyčelního kloubu. Kloubní tekutina je modelována pomocí hovězího séra. Experimentální metoda je založena na kolorimetrické interferometrii.

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

12.12.2012

Nakladatel

MM Science Journal

Místo

Praha

ISSN

1803-1269

Ročník

2012

Číslo

12

Strany od–do

378–381

Počet stran

4

BIBTEX


@article{BUT96674,
  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",
  year="2012",
  volume="2012",
  number="12",
  month="December",
  pages="378--381",
  publisher="MM Science Journal",
  address="Praha",
  issn="1803-1269"
}