Measuring the yield stress in magnetorheological fluids using ultrasounds

摘要: 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 model conventional MR fluid under steady shear ramp-up tests. By video-microscopy, ultrasonic techniques, rheometry simultaneously, it possible precisely at experimentally accessible times.