{"id":{"repo_id":"mit","oai_identifier":"oai:dspace.mit.edu:1721.1/45299"},"canonical_url":"https://search.dev.ndltd.org/etd/mit/oai:dspace.mit.edu:1721.1/45299","repository":{"repo_id":"mit","name":"MIT","base_url":"https://dspace.mit.edu/oai/request"},"display":{"title":"Development of laboratory class experiment to characterize magneto-rheological fluid","abstract":"An experimental apparatus has been developed that characterizes magneto-rheological (MR) fluid for an MIT Mechanical Engineering laboratory class by charting the fluid's yield stress versus magnetic field strength. The apparatus consists of a cantilevered beam that is damped using MR fluid, through which a magnetic field is varied. Unique functional requirements for a class experiment as well as experimental design rationale are also discussed. Lord's MRF-336AG MR fluid is characterized at low magnetic field strengths and compared to the company provided data. Experimental data suggest the magnetic field strength affects the fluid yield stress more greatly than the company data, though both data show similar general trends. This discrepancy likely comes from approximations for damper velocity made in the analysis. Both a Bingham plastic and Newtonian model are used to describe the fluid and based on the similarity of the results from both models at low field strengths, it is concluded that MR fluid can be modeled as a Newtonian fluid for field strengths between 0 and 4 kAmp/m.","abstract_html":"An experimental apparatus has been developed that characterizes magneto-rheological (MR) fluid for an MIT Mechanical Engineering laboratory class by charting the fluid's yield stress versus magnetic field strength. The apparatus consists of a cantilevered beam that is damped using MR fluid, through which a magnetic field is varied. Unique functional requirements for a class experiment as well as experimental design rationale are also discussed. Lord's MRF-336AG MR fluid is characterized at low magnetic field strengths and compared to the company provided data. Experimental data suggest the magnetic field strength affects the fluid yield stress more greatly than the company data, though both data show similar general trends. This discrepancy likely comes from approximations for damper velocity made in the analysis. Both a Bingham plastic and Newtonian model are used to describe the fluid and based on the similarity of the results from both models at low field strengths, it is concluded that MR fluid can be modeled as a Newtonian fluid for field strengths between 0 and 4 kAmp/m.","abstract_has_math":false,"creators":["Ray, Stephen D. (Stephen Douglas)"],"institution":"Massachusetts Institute of Technology","degree_name":null,"degree_level":null,"degree_discipline":null,"degree_department":"Massachusetts Institute of Technology. Dept. of Mechanical Engineering.","school":null,"contributors":[],"advisors":["Douglas P. Hart."],"committee_chairs":[],"committee_members":[],"year":2008,"date_issued":"2008","date_published":"2008","updated_at":"2026-07-22T22:21:24Z","subjects":["Mechanical Engineering."],"languages":["eng"],"rights":["M.I.T. theses are protected by copyright. They may be viewed from this source for any purpose, but reproduction or distribution in any format is prohibited without written permission. See provided URL for inquiries about permission."],"rights_urls":["http://dspace.mit.edu/handle/1721.1/7582"],"identifier_entries":[]},"links":{"outbound_url":"http://hdl.handle.net/1721.1/45299","outbound_label":"Handle","outbound_source":"dc:identifier.uri"},"metadata_groups":[{"id":"people","label":"People","entries":[{"key":"dc:contributor.advisor","label":"Advisor","values":["Douglas P. Hart."]},{"key":"dc:contributor.department","label":"Department","values":["Massachusetts Institute of Technology. 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Unique functional requirements for a class experiment as well as experimental design rationale are also discussed. Lord's MRF-336AG MR fluid is characterized at low magnetic field strengths and compared to the company provided data. Experimental data suggest the magnetic field strength affects the fluid yield stress more greatly than the company data, though both data show similar general trends. This discrepancy likely comes from approximations for damper velocity made in the analysis. Both a Bingham plastic and Newtonian model are used to describe the fluid and based on the similarity of the results from both models at low field strengths, it is concluded that MR fluid can be modeled as a Newtonian fluid for field strengths between 0 and 4 kAmp/m."]},{"key":"dc:description.degree","label":"Dc Description Degree","values":["S.B."]},{"key":"dc:title","label":"Title","values":["Development of laboratory class experiment to characterize magneto-rheological fluid"]}]}],"canonical_facts":{"dc:contributor.advisor":["Douglas P. Hart."],"dc:contributor.department":["Massachusetts Institute of Technology. Dept. of Mechanical Engineering."],"dc:contributor.other":["Massachusetts Institute of Technology. Dept. of Mechanical Engineering."],"dc:creator":["Ray, Stephen D. (Stephen Douglas)"],"dc:date.accessioned":["2009-04-29T17:22:18Z"],"dc:date.available":["2009-04-29T17:22:18Z"],"dc:date.issued":["2008"],"dc:description":["Thesis (S.B.)--Massachusetts Institute of Technology, Dept. of Mechanical Engineering, 2008.","Includes bibliographical references (p. 39)."],"dc:description.abstract":["An experimental apparatus has been developed that characterizes magneto-rheological (MR) fluid for an MIT Mechanical Engineering laboratory class by charting the fluid's yield stress versus magnetic field strength. The apparatus consists of a cantilevered beam that is damped using MR fluid, through which a magnetic field is varied. Unique functional requirements for a class experiment as well as experimental design rationale are also discussed. Lord's MRF-336AG MR fluid is characterized at low magnetic field strengths and compared to the company provided data. Experimental data suggest the magnetic field strength affects the fluid yield stress more greatly than the company data, though both data show similar general trends. This discrepancy likely comes from approximations for damper velocity made in the analysis. Both a Bingham plastic and Newtonian model are used to describe the fluid and based on the similarity of the results from both models at low field strengths, it is concluded that MR fluid can be modeled as a Newtonian fluid for field strengths between 0 and 4 kAmp/m."],"dc:description.degree":["S.B."],"dc:identifier.uri":["http://hdl.handle.net/1721.1/45299"],"dc:language.iso":["eng"],"dc:publisher":["Massachusetts Institute of Technology"],"dc:rights":["M.I.T. theses are protected by copyright. They may be viewed from this source for any purpose, but reproduction or distribution in any format is prohibited without written permission. See provided URL for inquiries about permission."],"dc:rights.uri":["http://dspace.mit.edu/handle/1721.1/7582"],"dc:subject":["Mechanical Engineering."],"dc:title":["Development of laboratory class experiment to characterize magneto-rheological fluid"],"dc:type":["Thesis"]},"updated_at":"2026-07-22T22:21:24Z"}