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Yikun Yang, Shuaishuai Sun, Shiyang Tang, Weihua Li, Shiwu Zhang
The Viscoelastic Properties of Gallium-Indium Alloy
Appl. Rheol. 28:4 (2018) 42903 (7 pages)
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The viscoelastic properties of a gallium-indium alloy in the pre-yield region make it easier to understand their characteristics,
particularly the varying degrees of stiffness and damping properties. These viscoelastic properties were measured with a straincontrolled
rheometer, where both strain amplitude sweep mode and the angular frequency sweep mode were conducted. Three
groups of experiments were carried out in the strain amplitude sweep mode. In the angular frequency sweep mode, the storage
modulus G' and the loss modulus G''were investigated at the linear region, the critical region, and the non-linear region. Experimental
results indicate that the gallium-indium alloy exhibited similar viscoelastic properties. The linear viscoelastic region
takes place when the strain amplitude is less than the critical strain amplitude of 1%. At the critical regime, the gallium-indium
alloy has the strongest relative elasticity. These results are helpful to understand the intrinsic properties of gallium-indium
alloys and find their application in flexible circuits, soft robotics, self-healing, and mechanical shock absorption.
► Cite this publication as follows:
Yang Y, Sun S, Tang S, Li W, Zhang S: The Viscoelastic Properties of Gallium-Indium Alloy, Appl. Rheol. 28 (2018) 42903.
Yang.Yang, Hao Wang, Jing Liu
Mobile Phone Enabled Pervasive Measurement of Liquid Viscosity
Appl. Rheol. 21:6 (2011) 63890 (5 pages)
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A new conceptual non-contact method for liquid viscosity measurement in capillary tube using mobile phone
as the data acquisition facility is proposed. The video and image for the capillary force driven flow of the test
liquid was recorded by the phone camera. After the imaging reconstruction of the flow velocity in the horizontal
capillary and the capillary head in the vertical direction, a digital image processing software was developed
to calculate the liquid viscosity in MATLAB 2007b environment, recurring to the established theoretical correlation
for flow mechanics. To demonstrate the feasibility and accuracy of the method, 10 groups of liquid were
measured and the results were compared with the data obtained from a standard rotating viscometer. The relative
error was found falling in the range of 0 ~ 20 %. This study establishes a pervasive low cost way for viscosity
measurement of various solutions.
► Cite this publication as follows:
Yang Y, Wang H, Liu J: Mobile Phone Enabled Pervasive Measurement of Liquid Viscosity, Appl. Rheol. 21 (2011) 63890.
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