Nested dipolar Halbach arrays for the determination of magnetorheological properties at variable magnetic field
A new apparatus for the measurement of magnetorheological properties of magnetic fluids in a commercial strain-controlled rheometer is proposed. The new setup makes use of the concept of the Halbach cylinder to generate a homogeneous dipolar magnetic field, using only permanent magnets. Two of these...
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| Veröffentlicht in: | Rheologica acta 2011-06, Vol.50 (5-6), p.441-459 |
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| container_title | Rheologica acta |
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| creator | Barroso, Vitor C. Raich, Hanspeter Blümler, Peter Spiess, Hans W. Wilhelm, Manfred |
| description | A new apparatus for the measurement of magnetorheological properties of magnetic fluids in a commercial strain-controlled rheometer is proposed. The new setup makes use of the concept of the Halbach cylinder to generate a homogeneous dipolar magnetic field, using only permanent magnets. Two of these Halbach cylinders are combined, allowing the magnetic field to be varied by simply rotating the cylinders relatively to one another. The magnetic field achieved in the middle of the cylinders varies from nearly zero to about 0.6 T without a significant variation on the high homogeneity (Δ
B
/
B
|
| doi_str_mv | 10.1007/s00397-011-0578-6 |
| format | Article |
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B
/
B
< 2 × 10
− 2
) of the resulting field. To perform the rheological experiments inside a strong magnetic field, measurement geometries (concentric cylinders and a four-bladed vane) were constructed from a non-magnetic material (polyoxymethylene). For the first experiments with the new setup, a commercial magnetic suspension of carbonyl iron particles in hydrocarbon oil was investigated. Stress growth experiments at varying shear rates in the steady shear regime, as well as strain sweep experiments at constant frequency in the dynamic oscillatory regime, were performed. The results show a shift of the linear (elastic) regime in oscillatory shear to higher strain values for increasing magnetic field. The steady shear viscosity increases with increasing magnetic field. The behaviour of the magnetic suspension was understood in the context of the ratio from the viscous to the polarisation forces, the so-called Mason number.</description><identifier>ISSN: 0035-4511</identifier><identifier>EISSN: 1435-1528</identifier><identifier>DOI: 10.1007/s00397-011-0578-6</identifier><identifier>CODEN: RHEAAK</identifier><language>eng</language><publisher>Berlin/Heidelberg: Springer-Verlag</publisher><subject>Carbonyls ; Characterization and Evaluation of Materials ; Chemistry and Materials Science ; Complex Fluids and Microfluidics ; Concentric cylinders ; Cross-disciplinary physics: materials science; rheology ; Electro- and magnetorheological fluids ; Exact sciences and technology ; Experiments ; Food Science ; Magnetic fields ; Magnetic fluids ; Magnetic levitation ; Magnetic materials ; Magnetic properties ; Magnetism ; Magnetorheological fluids ; Material types ; Materials Science ; Mechanical Engineering ; Original Contribution ; Permanent magnets ; Physics ; Polymer Sciences ; Rheological measurements ; Rheological properties ; Rheology ; Rotating cylinders ; Shear viscosity ; Soft and Granular Matter ; Strain ; Techniques and apparatus</subject><ispartof>Rheologica acta, 2011-06, Vol.50 (5-6), p.441-459</ispartof><rights>Springer-Verlag 2011</rights><rights>2015 INIST-CNRS</rights><rights>Rheologica Acta is a copyright of Springer, (2011). All Rights Reserved.</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c346t-f6e207c82d436ae2dd458dc4a78c8027959ad3bf929f3a3a122cee7003cabe723</citedby><cites>FETCH-LOGICAL-c346t-f6e207c82d436ae2dd458dc4a78c8027959ad3bf929f3a3a122cee7003cabe723</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktopdf>$$Uhttps://link.springer.com/content/pdf/10.1007/s00397-011-0578-6$$EPDF$$P50$$Gspringer$$H</linktopdf><linktohtml>$$Uhttps://link.springer.com/10.1007/s00397-011-0578-6$$EHTML$$P50$$Gspringer$$H</linktohtml><link.rule.ids>314,780,784,27924,27925,41488,42557,51319</link.rule.ids><backlink>$$Uhttp://pascal-francis.inist.fr/vibad/index.php?action=getRecordDetail&idt=24735140$$DView record in Pascal Francis$$Hfree_for_read</backlink></links><search><creatorcontrib>Barroso, Vitor C.</creatorcontrib><creatorcontrib>Raich, Hanspeter</creatorcontrib><creatorcontrib>Blümler, Peter</creatorcontrib><creatorcontrib>Spiess, Hans W.</creatorcontrib><creatorcontrib>Wilhelm, Manfred</creatorcontrib><title>Nested dipolar Halbach arrays for the determination of magnetorheological properties at variable magnetic field</title><title>Rheologica acta</title><addtitle>Rheol Acta</addtitle><description>A new apparatus for the measurement of magnetorheological properties of magnetic fluids in a commercial strain-controlled rheometer is proposed. The new setup makes use of the concept of the Halbach cylinder to generate a homogeneous dipolar magnetic field, using only permanent magnets. Two of these Halbach cylinders are combined, allowing the magnetic field to be varied by simply rotating the cylinders relatively to one another. The magnetic field achieved in the middle of the cylinders varies from nearly zero to about 0.6 T without a significant variation on the high homogeneity (Δ
B
/
B
< 2 × 10
− 2
) of the resulting field. To perform the rheological experiments inside a strong magnetic field, measurement geometries (concentric cylinders and a four-bladed vane) were constructed from a non-magnetic material (polyoxymethylene). For the first experiments with the new setup, a commercial magnetic suspension of carbonyl iron particles in hydrocarbon oil was investigated. Stress growth experiments at varying shear rates in the steady shear regime, as well as strain sweep experiments at constant frequency in the dynamic oscillatory regime, were performed. The results show a shift of the linear (elastic) regime in oscillatory shear to higher strain values for increasing magnetic field. The steady shear viscosity increases with increasing magnetic field. The behaviour of the magnetic suspension was understood in the context of the ratio from the viscous to the polarisation forces, the so-called Mason number.</description><subject>Carbonyls</subject><subject>Characterization and Evaluation of Materials</subject><subject>Chemistry and Materials Science</subject><subject>Complex Fluids and Microfluidics</subject><subject>Concentric cylinders</subject><subject>Cross-disciplinary physics: materials science; rheology</subject><subject>Electro- and magnetorheological fluids</subject><subject>Exact sciences and technology</subject><subject>Experiments</subject><subject>Food Science</subject><subject>Magnetic fields</subject><subject>Magnetic fluids</subject><subject>Magnetic levitation</subject><subject>Magnetic materials</subject><subject>Magnetic properties</subject><subject>Magnetism</subject><subject>Magnetorheological fluids</subject><subject>Material types</subject><subject>Materials Science</subject><subject>Mechanical Engineering</subject><subject>Original Contribution</subject><subject>Permanent magnets</subject><subject>Physics</subject><subject>Polymer Sciences</subject><subject>Rheological measurements</subject><subject>Rheological properties</subject><subject>Rheology</subject><subject>Rotating cylinders</subject><subject>Shear viscosity</subject><subject>Soft and Granular Matter</subject><subject>Strain</subject><subject>Techniques and apparatus</subject><issn>0035-4511</issn><issn>1435-1528</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2011</creationdate><recordtype>article</recordtype><sourceid>AFKRA</sourceid><sourceid>BENPR</sourceid><sourceid>CCPQU</sourceid><sourceid>DWQXO</sourceid><recordid>eNp1kM1OwzAQhC0EEqXwANwsIY4B_yRxckQVUKQKLnC2tva6dZXGxU6R-vYYpYITpz3sN7M7Q8g1Z3ecMXWfGJOtKhjnBatUU9QnZMJLWRW8Es0pmeR1VZQV5-fkIqUNY1zVSkxIeMU0oKXW70IHkc6hW4JZU4gRDom6EOmwRmpxwLj1PQw-9DQ4uoVVj0OIawxdWHkDHd3FsMM4eEwUBvoF0cOywyPpDXUeO3tJzhx0Ca-Oc0o-nh7fZ_Ni8fb8MntYFEaW9VC4GgVTphG2lDWgsLasGmtKUI1pmFBt1YKVS9eK1kmQwIUwiCqnNLBEJeSU3Iy--avPfc6oN2Ef-3xSC1ELxmpZ8UzxkTIxpBTR6V30W4gHzZn-6VWPvercq_7pVddZc3t0hpRjuwi98elXKEqVnUuWOTFyKa_6Fca_D_43_wZ-pomO</recordid><startdate>20110601</startdate><enddate>20110601</enddate><creator>Barroso, Vitor C.</creator><creator>Raich, Hanspeter</creator><creator>Blümler, Peter</creator><creator>Spiess, Hans W.</creator><creator>Wilhelm, Manfred</creator><general>Springer-Verlag</general><general>Springer</general><general>Springer Nature B.V</general><scope>IQODW</scope><scope>AAYXX</scope><scope>CITATION</scope><scope>8FE</scope><scope>8FG</scope><scope>ABJCF</scope><scope>AFKRA</scope><scope>BENPR</scope><scope>BGLVJ</scope><scope>CCPQU</scope><scope>D1I</scope><scope>DWQXO</scope><scope>HCIFZ</scope><scope>KB.</scope><scope>L6V</scope><scope>M7S</scope><scope>PDBOC</scope><scope>PQEST</scope><scope>PQQKQ</scope><scope>PQUKI</scope><scope>PRINS</scope><scope>PTHSS</scope></search><sort><creationdate>20110601</creationdate><title>Nested dipolar Halbach arrays for the determination of magnetorheological properties at variable magnetic field</title><author>Barroso, Vitor C. ; Raich, Hanspeter ; Blümler, Peter ; Spiess, Hans W. ; Wilhelm, Manfred</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c346t-f6e207c82d436ae2dd458dc4a78c8027959ad3bf929f3a3a122cee7003cabe723</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2011</creationdate><topic>Carbonyls</topic><topic>Characterization and Evaluation of Materials</topic><topic>Chemistry and Materials Science</topic><topic>Complex Fluids and Microfluidics</topic><topic>Concentric cylinders</topic><topic>Cross-disciplinary physics: materials science; rheology</topic><topic>Electro- and magnetorheological fluids</topic><topic>Exact sciences and technology</topic><topic>Experiments</topic><topic>Food Science</topic><topic>Magnetic fields</topic><topic>Magnetic fluids</topic><topic>Magnetic levitation</topic><topic>Magnetic materials</topic><topic>Magnetic properties</topic><topic>Magnetism</topic><topic>Magnetorheological fluids</topic><topic>Material types</topic><topic>Materials Science</topic><topic>Mechanical Engineering</topic><topic>Original Contribution</topic><topic>Permanent magnets</topic><topic>Physics</topic><topic>Polymer Sciences</topic><topic>Rheological measurements</topic><topic>Rheological properties</topic><topic>Rheology</topic><topic>Rotating cylinders</topic><topic>Shear viscosity</topic><topic>Soft and Granular Matter</topic><topic>Strain</topic><topic>Techniques and apparatus</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Barroso, Vitor C.</creatorcontrib><creatorcontrib>Raich, Hanspeter</creatorcontrib><creatorcontrib>Blümler, Peter</creatorcontrib><creatorcontrib>Spiess, Hans W.</creatorcontrib><creatorcontrib>Wilhelm, Manfred</creatorcontrib><collection>Pascal-Francis</collection><collection>CrossRef</collection><collection>ProQuest SciTech Collection</collection><collection>ProQuest Technology Collection</collection><collection>Materials Science & Engineering Collection</collection><collection>ProQuest Central UK/Ireland</collection><collection>ProQuest Central</collection><collection>Technology Collection</collection><collection>ProQuest One Community College</collection><collection>ProQuest Materials Science Collection</collection><collection>ProQuest Central Korea</collection><collection>SciTech Premium Collection</collection><collection>Materials Science Database</collection><collection>ProQuest Engineering Collection</collection><collection>Engineering Database</collection><collection>Materials Science Collection</collection><collection>ProQuest One Academic Eastern Edition (DO NOT USE)</collection><collection>ProQuest One Academic</collection><collection>ProQuest One Academic UKI Edition</collection><collection>ProQuest Central China</collection><collection>Engineering Collection</collection><jtitle>Rheologica acta</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Barroso, Vitor C.</au><au>Raich, Hanspeter</au><au>Blümler, Peter</au><au>Spiess, Hans W.</au><au>Wilhelm, Manfred</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Nested dipolar Halbach arrays for the determination of magnetorheological properties at variable magnetic field</atitle><jtitle>Rheologica acta</jtitle><stitle>Rheol Acta</stitle><date>2011-06-01</date><risdate>2011</risdate><volume>50</volume><issue>5-6</issue><spage>441</spage><epage>459</epage><pages>441-459</pages><issn>0035-4511</issn><eissn>1435-1528</eissn><coden>RHEAAK</coden><abstract>A new apparatus for the measurement of magnetorheological properties of magnetic fluids in a commercial strain-controlled rheometer is proposed. The new setup makes use of the concept of the Halbach cylinder to generate a homogeneous dipolar magnetic field, using only permanent magnets. Two of these Halbach cylinders are combined, allowing the magnetic field to be varied by simply rotating the cylinders relatively to one another. The magnetic field achieved in the middle of the cylinders varies from nearly zero to about 0.6 T without a significant variation on the high homogeneity (Δ
B
/
B
< 2 × 10
− 2
) of the resulting field. To perform the rheological experiments inside a strong magnetic field, measurement geometries (concentric cylinders and a four-bladed vane) were constructed from a non-magnetic material (polyoxymethylene). For the first experiments with the new setup, a commercial magnetic suspension of carbonyl iron particles in hydrocarbon oil was investigated. Stress growth experiments at varying shear rates in the steady shear regime, as well as strain sweep experiments at constant frequency in the dynamic oscillatory regime, were performed. The results show a shift of the linear (elastic) regime in oscillatory shear to higher strain values for increasing magnetic field. The steady shear viscosity increases with increasing magnetic field. The behaviour of the magnetic suspension was understood in the context of the ratio from the viscous to the polarisation forces, the so-called Mason number.</abstract><cop>Berlin/Heidelberg</cop><pub>Springer-Verlag</pub><doi>10.1007/s00397-011-0578-6</doi><tpages>19</tpages></addata></record> |
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| subjects | Carbonyls Characterization and Evaluation of Materials Chemistry and Materials Science Complex Fluids and Microfluidics Concentric cylinders Cross-disciplinary physics: materials science rheology Electro- and magnetorheological fluids Exact sciences and technology Experiments Food Science Magnetic fields Magnetic fluids Magnetic levitation Magnetic materials Magnetic properties Magnetism Magnetorheological fluids Material types Materials Science Mechanical Engineering Original Contribution Permanent magnets Physics Polymer Sciences Rheological measurements Rheological properties Rheology Rotating cylinders Shear viscosity Soft and Granular Matter Strain Techniques and apparatus |
| title | Nested dipolar Halbach arrays for the determination of magnetorheological properties at variable magnetic field |
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