Piezoresistive immersion viscometer = 피에조 저항 효과를 이용한 잠김형 점도계

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Rheometry refers to experimental techniques to measure the rheological properties of material. Various rheometers and viscometers have been developed with distinctive characteristics in accuracy, cost, amount of liquid volume, apparatus’s dimension, probing ranges of liquid properties, and complexity of operating process. In this study, an immersion viscometer for the measurement of the steady shear viscosity and shear stress is reported. The piezoresistive immersion viscometer is easily built with low cost and worked in wide range of the liquid shear viscosity (0.1 to 1,000 Pa s) and stress (0.3 to 30 Pa) with a few milliliters of the volume of liquid. An immersed plate connected to a piezoresistive beam moves through liquid filled in a trough and causes the change in the resistance of the piezoresistive beam. Based on the dimensional analysis to correlate the resistance variation with other physical parameters in the system, the empirical equation for the rheometry is derived. The validity of this equation is demonstrated through the measurement of the shear viscosity and stress of honey and xanthan gum solution. This device will provide a compact rheometry with simple operating process and on-line measurements.
Advisors
Kim, Do Hyunresearcher김도현researcher
Description
한국과학기술원 :생명화학공학과,
Publisher
한국과학기술원
Issue Date
2015
Identifier
325007
Language
eng
Description

학위논문(석사) - 한국과학기술원 : 생명화학공학과, 2015.2 ,[iv, 45 p. :]

Keywords

rheometry; shear viscosity; shear stress; piezoresistive effect; bending of a beam; 유변물성측정; 전단 점도; 전단 응력; 피에조 저항 효과; 빔의 휨

URI
http://hdl.handle.net/10203/221478
Link
http://library.kaist.ac.kr/search/detail/view.do?bibCtrlNo=657567&flag=dissertation
Appears in Collection
CBE-Theses_Master(석사논문)
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