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Article: A testing machine for dental air-turbine handpiece characteristics: Free-running speed, stall torque, bearing resistance

TitleA testing machine for dental air-turbine handpiece characteristics: Free-running speed, stall torque, bearing resistance
Authors
Issue Date2005
PublisherOperative Dentistry. The Journal's web site is located at http://www.jopdent.org
Citation
Operative Dentistry, 2005, v. 30 n. 1, p. 26-31 How to Cite?
AbstractThe measurement of performance characteristics of dental air turbine handpieces is of interest with respect to product comparisons, standards specifications and monitoring of bearing longevity in clinical service. Previously, however, bulky and expensive laboratory equipment was required. A portable test machine is described for determining three key characteristics of dental air-turbine handpieces: free-running speed, stall torque and bearing resistance. It relies on a special circuit design for performing a hardware integration of a force signal with respect to rotational position, independent of the rate at which the turbine is allowed to turn during both stall torque and bearing resistance measurements. Free-running speed without the introduction of any imbalance can be readily monitored. From the essential linear relationship between torque and speed, dynamic torque and, hence, power, can then be calculated. In order for these measurements to be performed routinely with the necessary precision of location on the test stage, a detailed procedure for ensuring proper gripping of the handpiece is described. The machine may be used to verify performance claims, standard compliance checks should this be established as appropriate, monitor deterioration with time and usage in the clinical environment and for laboratory investigation of design development. © Operative Dentistry, 2005.
Persistent Identifierhttp://hdl.handle.net/10722/66307
ISSN
2015 Impact Factor: 2.819
2015 SCImago Journal Rankings: 0.641
ISI Accession Number ID
References

 

DC FieldValueLanguage
dc.contributor.authorDarvell, BWen_HK
dc.contributor.authorDyson, JEen_HK
dc.date.accessioned2010-09-06T05:45:16Z-
dc.date.available2010-09-06T05:45:16Z-
dc.date.issued2005en_HK
dc.identifier.citationOperative Dentistry, 2005, v. 30 n. 1, p. 26-31en_HK
dc.identifier.issn0361-7734en_HK
dc.identifier.urihttp://hdl.handle.net/10722/66307-
dc.description.abstractThe measurement of performance characteristics of dental air turbine handpieces is of interest with respect to product comparisons, standards specifications and monitoring of bearing longevity in clinical service. Previously, however, bulky and expensive laboratory equipment was required. A portable test machine is described for determining three key characteristics of dental air-turbine handpieces: free-running speed, stall torque and bearing resistance. It relies on a special circuit design for performing a hardware integration of a force signal with respect to rotational position, independent of the rate at which the turbine is allowed to turn during both stall torque and bearing resistance measurements. Free-running speed without the introduction of any imbalance can be readily monitored. From the essential linear relationship between torque and speed, dynamic torque and, hence, power, can then be calculated. In order for these measurements to be performed routinely with the necessary precision of location on the test stage, a detailed procedure for ensuring proper gripping of the handpiece is described. The machine may be used to verify performance claims, standard compliance checks should this be established as appropriate, monitor deterioration with time and usage in the clinical environment and for laboratory investigation of design development. © Operative Dentistry, 2005.en_HK
dc.languageengen_HK
dc.publisherOperative Dentistry. The Journal's web site is located at http://www.jopdent.orgen_HK
dc.relation.ispartofOperative Dentistryen_HK
dc.subject.meshAiren_HK
dc.subject.meshDental High-Speed Equipmenten_HK
dc.subject.meshEquipment Designen_HK
dc.subject.meshEquipment Failure Analysis - instrumentationen_HK
dc.subject.meshFrictionen_HK
dc.subject.meshMaterials Testing - instrumentationen_HK
dc.subject.meshRotationen_HK
dc.subject.meshTorqueen_HK
dc.subject.meshTransducersen_HK
dc.titleA testing machine for dental air-turbine handpiece characteristics: Free-running speed, stall torque, bearing resistanceen_HK
dc.typeArticleen_HK
dc.identifier.openurlhttp://library.hku.hk:4550/resserv?sid=HKU:IR&issn=0361-7734&volume=30&spage=26&epage=31&date=2005&atitle=A+testing+machine+for+dental+air-turbine+handpiece+characteristics:+free-running+speed,+stall+torque,+bearing+resistanceen_HK
dc.identifier.emailDarvell, BW: b.w.darvell@hku.hken_HK
dc.identifier.emailDyson, JE: jdyson@hkucc.hku.hken_HK
dc.identifier.authorityDarvell, BW=rp00007en_HK
dc.identifier.authorityDyson, JE=rp00003en_HK
dc.description.naturelink_to_subscribed_fulltext-
dc.identifier.pmid15765954-
dc.identifier.scopuseid_2-s2.0-14844325370en_HK
dc.identifier.hkuros97380en_HK
dc.relation.referenceshttp://www.scopus.com/mlt/select.url?eid=2-s2.0-14844325370&selection=ref&src=s&origin=recordpageen_HK
dc.identifier.volume30en_HK
dc.identifier.issue1en_HK
dc.identifier.spage26en_HK
dc.identifier.epage31en_HK
dc.identifier.isiWOS:000226843500005-
dc.publisher.placeUnited Statesen_HK
dc.identifier.scopusauthoridDarvell, BW=7005953926en_HK
dc.identifier.scopusauthoridDyson, JE=23089868600en_HK

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