Effect of pressure on the physical properties of magnetorheological fluids
To date, several applications of magnetorheological (MR) fluids are present in the industrial world, nonetheless system requirements often needs better material properties. In technical literature a previous work shows that MR fluids exhibit a pressure dependency called squeeze strengthen effect. Si...
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| Format: | Article |
| Language: | English |
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Gruppo Italiano Frattura
2012-12-01
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| Series: | Fracture and Structural Integrity |
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| Online Access: | https://212.237.37.202/index.php/fis/article/view/165 |
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| _version_ | 1841562644402667520 |
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| author | A. Spaggiari E. Dragoni |
| author_facet | A. Spaggiari E. Dragoni |
| author_sort | A. Spaggiari |
| collection | DOAJ |
| description | To date, several applications of magnetorheological (MR) fluids are present in the industrial world, nonetheless system requirements often needs better material properties. In technical literature a previous work shows that MR fluids exhibit a pressure dependency called squeeze strengthen effect. Since a lot of MR fluid based devices are rotary devices, this paper investigates the behaviour of MR fluids under pressure when a rotation is applied to shear the fluid. The system is designed in order to apply both the magnetic field and the pressure and follows a Design of Experiment approach. The experimental apparatus comprises a cylinder in which a piston is used both to apply the pressure and to shear the fluid. The magnetic circuit is designed to provide a nearly constant induction field in the MR fluid. The experimental apparatus measures the torque as a function of the variables considered and the yield shear stress is computed. The analysis of the results shows that there is a positive interaction between magnetic field and pressure, which enhances the MR fluid performances more than twice. |
| format | Article |
| id | doaj-art-7dd9a3020d7946bb8f521904301b40d4 |
| institution | Kabale University |
| issn | 1971-8993 |
| language | English |
| publishDate | 2012-12-01 |
| publisher | Gruppo Italiano Frattura |
| record_format | Article |
| series | Fracture and Structural Integrity |
| spelling | doaj-art-7dd9a3020d7946bb8f521904301b40d42025-01-03T00:46:06ZengGruppo Italiano FratturaFracture and Structural Integrity1971-89932012-12-01723Effect of pressure on the physical properties of magnetorheological fluidsA. Spaggiari0E. Dragoni1Dept. of Engineering Sciences and Methods, University of Modena and Reggio Emilia, ItalyDept. of Engineering Sciences and Methods, University of Modena and Reggio Emilia, ItalyTo date, several applications of magnetorheological (MR) fluids are present in the industrial world, nonetheless system requirements often needs better material properties. In technical literature a previous work shows that MR fluids exhibit a pressure dependency called squeeze strengthen effect. Since a lot of MR fluid based devices are rotary devices, this paper investigates the behaviour of MR fluids under pressure when a rotation is applied to shear the fluid. The system is designed in order to apply both the magnetic field and the pressure and follows a Design of Experiment approach. The experimental apparatus comprises a cylinder in which a piston is used both to apply the pressure and to shear the fluid. The magnetic circuit is designed to provide a nearly constant induction field in the MR fluid. The experimental apparatus measures the torque as a function of the variables considered and the yield shear stress is computed. The analysis of the results shows that there is a positive interaction between magnetic field and pressure, which enhances the MR fluid performances more than twice.https://212.237.37.202/index.php/fis/article/view/165Magnetorheological fluids |
| spellingShingle | A. Spaggiari E. Dragoni Effect of pressure on the physical properties of magnetorheological fluids Fracture and Structural Integrity Magnetorheological fluids |
| title | Effect of pressure on the physical properties of magnetorheological fluids |
| title_full | Effect of pressure on the physical properties of magnetorheological fluids |
| title_fullStr | Effect of pressure on the physical properties of magnetorheological fluids |
| title_full_unstemmed | Effect of pressure on the physical properties of magnetorheological fluids |
| title_short | Effect of pressure on the physical properties of magnetorheological fluids |
| title_sort | effect of pressure on the physical properties of magnetorheological fluids |
| topic | Magnetorheological fluids |
| url | https://212.237.37.202/index.php/fis/article/view/165 |
| work_keys_str_mv | AT aspaggiari effectofpressureonthephysicalpropertiesofmagnetorheologicalfluids AT edragoni effectofpressureonthephysicalpropertiesofmagnetorheologicalfluids |