Measuring the yield stress in magnetorheological fluids using ultrasounds
2013
In this work, we propose a method to accurately determine the yield stress in magnetorheological (MR) fluids using ultrasounds. The setup is constructed, and experimental data are obtained on a model conventional MR fluid under steady shear stress ramp-up tests. By using video-microscopy, ultrasonic techniques, and rheometry simultaneously, it is possible to precisely determine the yield stress at experimentally accessible times.
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