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dc.contributor.authorPíštěk, Václavcs
dc.contributor.authorKučera, Pavelcs
dc.contributor.authorFomin, Oleksijcs
dc.contributor.authorLovska, Alyonacs
dc.contributor.authorProkop, Alešcs
dc.date.accessioned2020-11-27T11:54:40Z
dc.date.available2020-11-27T11:54:40Z
dc.date.issued2020-09-14cs
dc.identifier.citationApplied Sciences - Basel. 2020, vol. 10, issue 18, p. 1-15.en
dc.identifier.issn2076-3417cs
dc.identifier.other165172cs
dc.identifier.urihttp://hdl.handle.net/11012/195708
dc.description.abstractAt present, exhaust gas turbochargers not only form the basis for the economical operation of petrol, diesel or gas engines of all power categories, but also have an irreplaceable role on reducing their emissions. In order to reduce emissions from internal combustion engines, various systems are being developed, all of which have a turbocharger as an important component. Demands on turbocharger system durability and reliability keep growing, which requires the application of increasingly advanced computational and experimental methods at the development beginning of these systems. The design of turbochargers starts with a mathematical description of their rotationally cyclic impellers. However, mistuning, i.e., a slight individual blade property deviation from the intended design parameters, leads to a disturbance of the rotational cyclic symmetry. This article deals with the effects of manufacturing-related deviations on the structural dynamic behaviour of real turbine rotors. As opposed to methods exploiting expensive scanning vibrometers for experimental modal analysis or time-consuming accurate measurement of the geometry of individual blades using 3D optical scanners. A suitable microphone and a finite element rotor wheel model are the basis of this new method. After comparing the described acoustic approach with the laser vibrometer procedure, the results seemed to be practically identical. In comparison with the laser technique the unquestionable added value of this new method is the fact that it brings a significant reduction in the financial requirements for laboratory equipment. Another important benefit is that the measuring process of bladed wheel mistuning is significantly less time-consuming.en
dc.formattextcs
dc.format.extent1-15cs
dc.format.mimetypeapplication/pdfcs
dc.language.isoencs
dc.publisherMDPIcs
dc.relation.ispartofApplied Sciences - Baselcs
dc.relation.urihttps://www.mdpi.com/2076-3417/10/18/6394cs
dc.rightsCreative Commons Attribution 4.0 Internationalcs
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/cs
dc.subjectturbochargeren
dc.subjectimpelleren
dc.subjectinternal combustion engineen
dc.subjectlaser-measurementen
dc.subjectmicrophoneen
dc.subjectmodal hammeren
dc.subjectFourier Transformen
dc.subjectFEM-modelen
dc.titleAcoustic Identification of Turbocharger Impeller Mistuning—A New Tool for Low Emission Engine Developmenten
thesis.grantorVysoké učení technické v Brně. Fakulta strojního inženýrství. Ústav automobilního a dopravního inženýrstvícs
sync.item.dbidVAV-165172en
sync.item.dbtypeVAVen
sync.item.insts2020.11.27 12:54:40en
sync.item.modts2020.11.27 12:14:53en
dc.coverage.issue18cs
dc.coverage.volume10cs
dc.identifier.doi10.3390/app10186394cs
dc.rights.accessopenAccesscs
dc.rights.sherpahttp://www.sherpa.ac.uk/romeo/issn/2076-3417/cs
dc.type.driverarticleen
dc.type.statusPeer-revieweden
dc.type.versionpublishedVersionen


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Creative Commons Attribution 4.0 International
Except where otherwise noted, this item's license is described as Creative Commons Attribution 4.0 International