Measurement system for rheological property of electrorheological fluids (ERF)

Abstract

The invention relates to a measuring system in the field of measuring technology, which comprises: a rotating shaft, an upper part four fluorine insulating sleeve, a beam arm, a measuring space, a conductive ring, a lower part four fluorine insulating sleeve and a base seat. Wherein the rotating shaft, the upper part four fluorine insulating sleeve and the beam arm tightly matching forms the moving unit of the measuring system to displace the upper plate of the ammeter; the base seat adds the conductive ring and the lower part four fluorine insulating sleeve; the inner cylinder of the conductive ring, the lower part four fluorine insulating sleeve and the cylinder of the center of the base seat forms the measuring space; the electrorheological liquid is positioned inside the measuring space; the conductive ring is connected with the positive source; the base seat is connected with the negative source; the field density of the measuring space is radial radiation direction; the beam arm pokes into the measuring space to cut the electrorheological liquid along to the tangential direction.

Description

technical field [0001] The invention relates to a device in the field of measurement technology, in particular to a measurement system for rheological properties of electrorheological fluid. Background technique [0002] Electrorheological fluid is a kind of intelligent fluid material, and its rheological properties are its most basic and critical characteristics. There are also various instruments and methods for measuring the rheological properties of electrorheological fluid. The existing measuring instruments and methods for the rheological properties of electrorheological fluids are basically modified and upgraded on the existing rheometers used for measuring the rheological properties of ordinary fluids. A common practice is to add high-voltage conductive and insulating components to the measurement system to form a high electric field in the measurement space of the measurement system. Taking the double-plate measurement system of a rotary rheometer as an example, th...

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Problems solved by technology

Third, the structural form of the double-plate measurement system cannot ensure sufficient and stable contact between the electrorheological fluid and the upper plate

Fourth, in the power supply mode of the positive electrode, the contact between the aluminum conductive ring and the electrolyte solution introduces additional shear stress, thereby affecting the measurement accuracy

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