レーザー誘起表面波を用いた新しい粘性率測定法 : 広い粘性率範囲に適用可能な測定原理および装置の開発(熱工学,内燃機関,動力など)

概要

論文の詳細を見る
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 CO_2 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>〜10^4 mPa・s) agreed well with the theoretical calculations. It is also confirmed that in the viscosity range 10^1〜10^3 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.
一般社団法人日本機械学会の論文
2006-02-25