Proceedings of the Korean Society for Noise and Vibration Engineering Conference (한국소음진동공학회:학술대회논문집)
- 2002.05a
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- Pages.153-159
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- 2002
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- 1598-2548(pISSN)
Mechanical Impedance at the Interface between a Torsionally-Vibrating Rod and a Viscous Fluid
비틀림 진동 봉과 점성 유체의 경계면에서의 역학적 임피던스
Abstract
This paper deals with the measurement of the fluid viscosity by using the torsional vibration of a circular red excited by a torsional vibrator at one end. The effect of an adjacent viscous fluid on the torsional vibration of the rod has been studied theoretically and expressed in terms of the mechanical impedance. The theoretically-obtained trend that the mechanical impedance is proportional to the square root of the viscosity times the density of the fluid has been confirmed by the impedance measurement. The paper demonstrates that a torsionally-vibrating rod can be used as a sensor to measure the viscosity of a fluid.
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