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dc.contributor.authorHilton, Andrew
dc.contributor.authorTansley, Geoff
dc.date.accessioned2017-05-03T14:41:38Z
dc.date.available2017-05-03T14:41:38Z
dc.date.issued2008
dc.date.modified2014-07-21T05:12:02Z
dc.identifier.issn0160-564X
dc.identifier.doi10.1111/j.1525-1594.2008.00629.x
dc.identifier.urihttp://hdl.handle.net/10072/61478
dc.description.abstractThe purpose of this investigation was to design a novel magnetic drive and bearing system for a new centrifugal rotary blood pump (CRBP). The drive system consists of two components: (i) permanent magnets within the impeller of the CRBP; and (ii) the driving electromagnets. Orientation of the magnets varies from axial through to 60ࠩncluded out-lean (conical configuration). Permanent magnets replace the electromagnet drive to allow easier characterization. The performance characteristics tested were the axial force of attraction between the stator and rotor at angles of rotational alignment, ج and the corresponding torque at those angles. The drive components were tested for various magnetic cone angles, ?. The test was repeated for three backing conditions: (i) non-backed; (ii) steel-cupped; and (iii) steel plate back-iron, performed on an Instron tensile testing machine. Experimental results were expanded upon through finite element and boundary element analysis (BEM). The force/torque characteristics were maximal for a 12-magnet configuration at 0ࠣone angle with steel-back iron (axial force = 60 N, torque = 0.375 Nm). BEM showed how introducing a cone angle increases the radial restoring force threefold while not compromising axial bearing force. Magnets in the drive system may be orientated not only to provide adequate coupling to drive the CRBP, but to provide significant axial and radial bearing forces capable of withstanding over 100 m/s2 shock excitation on the impeller. Although the 12 magnet 0ࠨ?) configuration yielded the greatest force/torque characteristic, this was seen as potentially unattractive as this magnetic cone angle yielded poor radial restoring force characteristics.
dc.description.peerreviewedYes
dc.description.publicationstatusYes
dc.languageEnglish
dc.language.isoeng
dc.publisherWiley-Blackwell Publishing, Inc.
dc.publisher.placeUnited States
dc.relation.ispartofstudentpublicationN
dc.relation.ispartofpagefrom772
dc.relation.ispartofpageto777
dc.relation.ispartofissue10
dc.relation.ispartofjournalArtificial Organs
dc.relation.ispartofvolume32
dc.rights.retentionY
dc.subject.fieldofresearchBiomedical engineering
dc.subject.fieldofresearchBiomedical engineering not elsewhere classified
dc.subject.fieldofresearchClinical sciences
dc.subject.fieldofresearchcode4003
dc.subject.fieldofresearchcode400399
dc.subject.fieldofresearchcode3202
dc.titleMagnetic drive system for a new centrifugal rotary blood pump
dc.typeJournal article
dc.type.descriptionC1 - Articles
dc.type.codeC - Journal Articles
gro.hasfulltextNo Full Text
gro.griffith.authorTansley, Geoff


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