Development of pulsed laser viscometer (Development of automatic high-speed measuring apparatus for viscosity by near-infrared laser-induced capillary wave method)
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- OYA Atsuki
- Keio University, School of Integrated Design Engineering
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- TAKIGUCHI Hiroki
- Keio University, School of Integrated Design Engineering
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- NAGASAKA Yuji
- Keio University, Department of System Design Engineering
Bibliographic Information
- Other Title
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- パルスレーザー粘度計の開発(近赤外レーザー誘起表面波法を用いた粘性率の自動高速測定装置開発)
Abstract
We have developed a pulsed laser viscometer (PLV) which is a high speed viscosity sensing technique using pulsed volume heating laser of near-infrared wavelength. For the purpose of developing the novel viscometer applicable to the in-situ measurement and the high time-resolution sensing of viscosity change process, the liquid-level height is a critical factor because the principle of this method is based on the physical phenomenon near the surface. Therefore, we developed the liquid-level control system for precisely adjusting the height. This system determines the liquid-level by controlling the sample stage to the target height with the reflected beam of a probing laser. In addition, we fully automated the measurement process for high speed sensing. The automatic system enables to measure viscosity in a few seconds after setting the sample. In this paper, with the developed experimental apparatus, in order to confirm the capability of the liquid-level control system, we successively measured viscosities of four different Newtonian liquids (toluene, water, 1-hexanol and JS20), whose viscosity range is from 0.1 to 10mPa・s. Then each measurement time was within 3~4 seconds and the deviations from the reference values were within ±10.7 %. In addition, as the aim for a verification of viscosity sensing, we measured viscosity of toluene with intervals of 1 second for 20 seconds. Finally, we successively measured the whole human blood viscosity at the coagulation process.
Journal
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- Transactions of the JSME (in Japanese)
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Transactions of the JSME (in Japanese) 80 (820), TEP0369-TEP0369, 2014
The Japan Society of Mechanical Engineers
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Keywords
Details 詳細情報について
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- CRID
- 1390001205515359872
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- NII Article ID
- 130005004989
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- ISSN
- 21879761
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- Text Lang
- ja
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- Data Source
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- JaLC
- Crossref
- CiNii Articles
- KAKEN
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- Abstract License Flag
- Disallowed