Characteristics of a magnetorheological fluid in high shear rate
| Autor: | Akio Inoue, Takehito Kikuchi, Isao Abe, Akihiko Iwasaki, Katsuhiko Okada |
|---|---|
| Rok vydání: | 2016 |
| Předmět: |
010302 applied physics
Materials science 02 engineering and technology Dissipation 021001 nanoscience & nanotechnology Condensed Matter Physics 01 natural sciences Durability Atomic and Molecular Physics and Optics Shear (sheet metal) Shear rate Mechanics of Materials 0103 physical sciences Signal Processing Magnetorheological fluid Thermal General Materials Science Sensitivity (control systems) Electrical and Electronic Engineering Composite material 0210 nano-technology Constant (mathematics) Civil and Structural Engineering |
| Zdroj: | Smart Materials and Structures. 25:115021 |
| ISSN: | 1361-665X 0964-1726 |
| Popis: | The information on the properties of the magnetorheological fluid (MRF) in high shear rate, in particular a shear rate greater than 10 000 s−1, is important for the design of devices utilizing the MRF with very narrow fluid gaps, which are used in high-speed applications. However, very little research has been conducted on this subject. The objective of this study is to provide such information. MRF-140CG (Lord Corp.) is chosen as an example MRF. The plastic viscosity, thermal sensitivity, and durability of the fluid, especially under a shear rate greater than 10 000 s−1, are reported. The plastic viscosity is almost constant under a wide range of magnetic input. In contrast, MRF-140CG is sensitive to the shear rate; its sensitivity is relatively low at high shear rates. The thermal sensitivity shows negative values, and the effect of temperature decreases with increasing magnetic input. According to the result of the duration test at 30 000 s−1 and at a temperature of 120 °C, the lifetime dissipation energy is 5.48 MJ ml−1. |
| Databáze: | OpenAIRE |
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