A magnetorheological fluid sedimentation velocity detection device, method and system

Abstract

The invention discloses a magnetorheological fluid sedimentation velocity detection device, method and system. The device includes: a first wire, a second wire, an inner wall, an outer wall, a magneto-rheological fluid, and a pole plate; the first wire communicates with the outside of the inner wall, and the second wire communicates with the outer wall The outer side of the magneto-rheological fluid is arranged between the inner wall surface and the outer wall surface; a plurality of the pole plates are arranged in pairs on the inner side of the inner wall surface and the inner side of the outer wall surface. Apply a magnetic field to the magnetorheological fluid sedimentation velocity detection device, measure the impedance value of the magnetorheological fluid after the magnetic field is applied, and cancel the magnetic field after the measurement; then detect the sedimentation velocity of the magnetorheological fluid according to the impedance value. The method of the present invention detects the sedimentation velocity of the magnetorheological fluid, overcomes the disadvantage that the prior art can only be detected in the experimental environment, and can be applied to the failure detection of the magnetorheological fluid in engineering practice. The detection of liquid settlement has high measurement accuracy.

Description

technical field [0001] The invention relates to the field of testing the sedimentation characteristics of magnetorheological fluids, in particular to a magnetorheological fluid sedimentation velocity detection device, method and system. Background technique [0002] Magnetorheological fluid is a very popular smart material at present. It is composed of magnetic particles, carrier liquid and additives. It is widely used in shock absorption, polishing, construction, automobile and other fields. With the in-depth research on the application of magnetorheological fluids, the performance requirements of magnetorheological fluids in engineering are gradually becoming higher. However, due to the large density difference and gravity phenomenon between the dispersed phase (magnetic particles) and the continuous phase (carrier liquid and additives) in the magnetorheological fluid, the sedimentation velocity and sedimentation stability of the magnetorheological fluid are always problem...

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Problems solved by technology

In the existing reference literature research, there are the following methods: light transmittance pulsation detection method, timing quantitative chemical sampling method, inductance method, etc. are all used to detect the concentration change of magnetorheological fluid during the sedimentation process, but these characterization methods are not There are more or less disadvantages, it is only suitable for the experimental environment and it is difficult to apply to the detection in actual engineering

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