Determination of the Viscosity by Means of the Optical Methods Utilizing the Bend Loss of the Vibrating Fiber

0361098 - ÚT 2012 RIV US eng J - Článek v odborném periodiku
Fedorchenko, Alexander I. - Stachiv, Ivo
Determination of the Viscosity by Means of the Optical Methods Utilizing the Bend Loss of the Vibrating Fiber.
Sensor Letters. Roč. 9, č. 2 (2011), s. 741-744. ISSN 1546-198X
Grant CEP: GA AV ČR(CZ) IAA200760801; GA ČR GA106/09/1573
Výzkumný záměr: CEZ:AV0Z20760514; CEZ:AV0Z10100520
Klíčová slova: viscosity determination * bend loss sensor * resonance
Kód oboru RIV: BK - Mechanika tekutin
Impakt faktor: 0.819, rok: 2011
http://www.ingentaconnect.com/content/asp/senlet/2011/00000009/00000002/art00059

The systematic theoretical investigation of the optical viscometer utilizing the bend loss of fiber is carried out. The physical and mathematical model of the vibrating fiber submerged in a viscous fluid has been put forward. The impact of the viscosity and density on the resonance frequency shift has been elucidated. Based on the solution of the model simple ways of the viscosity extraction from maximum vibrational amplitude, bandwidth and the resonance frequency shift have been proposed. The theoretically achievable resolution of the viscosity sensing from a half-amplitude bandwidth with the instrumental error 2 Hz is 0.04 mPa·s for high viscous 72% glycerol-water solution.
Trvalý link: http://hdl.handle.net/11104/0198505