scholarly journals Development of high temperature viscosity measurement technique

1980 ◽  
Author(s):  
Wemple. R.P. ◽  
W.F. Hammetter ◽  
C.J. Greenholt
2005 ◽  
Vol 33 (1) ◽  
pp. 101-125 ◽  
Author(s):  
C. Igathinathane ◽  
V. K. Malleswar ◽  
U. Appa Rao ◽  
L. O. Pordesimo ◽  
A. R. Womac

2021 ◽  
Vol 43 ◽  
pp. 33-43
Author(s):  
Gökhan Haydarlar ◽  
Mehmet Alper Sofuoğlu ◽  
Selim Gürgen ◽  
Melih Cemal Kushan ◽  
Mesut Tekkalmaz

This paper presents the feasibility of developing an electromechanical in-situ viscosity measurement technique by analyzing the detectability of small variations in the viscosity of different shear thickening fluids and their different compositions. Shear thickening fluid (STF) is a kind of non-Newtonian fluid showing an increasing viscosity profile under loading. STF is utilized in several applications to take advantage of its tunable rheology. However, process control in different STF applications requires rheological measurements, which cause a costly investment and long-lasting labor. Therefore, one of the most commonly used in-situ structural health monitoring techniques, electromechanical impedance (EMI), was used in this study. In order to actuate the medium electromechanically, a piezoelectric wafer active sensor (PWAS) was used. The variations in the spectral response of PWAS resonator that can be submerged into shear thickening fluid are analyzed by the root mean square deviation, mean absolute percentage deviation and correlation coefficient deviation. According to the results, EMI metrics provide good correlations with the rheological parameters of STF and thereby enabling quick and low-cost rheological control for STF applications such as vibration dampers or stiffness control systems.


1994 ◽  
Vol 347 ◽  
Author(s):  
N. G. Evans ◽  
M. G. Hamlyn

Research into microwave firing at Staffordshire University has been carried out since 1988 and dielectric property measurements have been used to help in developing process technology. The dielectric property measurement technique (cavity perturbation [1]) is that designed by Atomic Energy of Canada Ltd (A.E.C.L) [2]. The technique was chosen because of it's ability to analyse powder samples as well as solids. In order for dielectric property data to be of use in developing microwave processing, measurements have to be made on the starting materials of the process (i.e powders). When measurements are made on powders it is important to quote the bulk density at which the measurement was made since dielectric properties vary with density as well as frequency and temperature.


Author(s):  
Vimal Shah ◽  
Krishnan Balasubramaniam ◽  
R. Daniel Costley ◽  
Jagdish P. Singh

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