Application of laser-induced capillary wave for a new viscosity measurement method (theory and experimental apparatus for measuring wide range of viscosity)

Takahiro Oba, Ken Yabui, Yuji Nagasaka

Research output: Contribution to journalArticle

2 Citations (Scopus)

Abstract

The viscosity is one of the very important thermophysical properties for food industry and it is required to develop a new technique which is possible to measure significantly changing viscosity by single apparatus. In the present study, we have developed a new viscometry based on a laser-induced capillary wave technique by using a pulsed CO2 laser as a heating source. The detected signals for several Newtonian liquids such as acetone, toluene, water, ethanol, 1-hexanol, decanol, ethylene glycol, glycerol, JS 100, JS 1000 and JS 14000 having wide range of the viscosity (10-1-104 mPa·s) agreed well with the theoretical calculations. It is also confirmed that in the viscosity range 101-103 mPa-s, the viscosity can be determined by calculating decay time constant of detected signals. We have demonstrated that the application of the laser-induced capillary wave technique has considerable potential for the measurement from low to high viscosity liquids.

Original languageEnglish
Pages (from-to)428-433
Number of pages6
JournalNihon Kikai Gakkai Ronbunshu, B Hen/Transactions of the Japan Society of Mechanical Engineers, Part B
Volume72
Issue number2
Publication statusPublished - 2006 Feb

Fingerprint

capillary waves
Viscosity measurement
Viscosity
viscosity
Lasers
lasers
Newtonian liquids
viscometry
thermophysical properties
liquids
glycerols
Ethylene glycol
Pulsed lasers
Glycerol
food
Acetone
acetone
time constant
Toluene
toluene

Keywords

  • Laser-Induced Capillary Wave
  • Measurement Technique
  • Surface Tension
  • Themophysical Properties
  • Viscosity

ASJC Scopus subject areas

  • Mechanical Engineering

Cite this

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AU - Nagasaka, Yuji

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AB - The viscosity is one of the very important thermophysical properties for food industry and it is required to develop a new technique which is possible to measure significantly changing viscosity by single apparatus. In the present study, we have developed a new viscometry based on a laser-induced capillary wave technique by using a pulsed CO2 laser as a heating source. The detected signals for several Newtonian liquids such as acetone, toluene, water, ethanol, 1-hexanol, decanol, ethylene glycol, glycerol, JS 100, JS 1000 and JS 14000 having wide range of the viscosity (10-1-104 mPa·s) agreed well with the theoretical calculations. It is also confirmed that in the viscosity range 101-103 mPa-s, the viscosity can be determined by calculating decay time constant of detected signals. We have demonstrated that the application of the laser-induced capillary wave technique has considerable potential for the measurement from low to high viscosity liquids.

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