Počet záznamů: 1  

Contactless Diagnostics of Turbine Blade Vibration and Damage

  1. 1.
    SYSNO ASEP0363222
    Druh ASEPJ - Článek v odborném periodiku
    Zařazení RIVJ - Článek v odborném periodiku
    Poddruh JČlánek ve WOS
    NázevContactless Diagnostics of Turbine Blade Vibration and Damage
    Tvůrce(i) Procházka, Pavel (UT-L) RID
    Vaněk, František (UT-L) RID
    Zdroj.dok.Journal of Physics: Conference Series
    Roč. 305, č. 1 (2011), s. 1-11
    Poč.str.11 s.
    AkceInternational Conference on Damage Assessment of Structures (DAMAS 2011) /9./
    Datum konání11.07.2011-13.07.2011
    Místo konáníOxford
    ZeměGB - Velká Británie
    Typ akceWRD
    Jazyk dok.eng - angličtina
    Země vyd.GB - Velká Británie
    Klíč. slovasteam turbine ; blade damage assessment ; tip-timing method
    Vědní obor RIVJL - Únava materiálu a lomová mechanika
    CEZAV0Z20760514 - UT-L (2005-2011)
    UT WOS000309681100109
    DOI10.1088/1742-6596/305/1/012116
    AnotaceThe tip-timing method based on the evaluation of time differences of blade passages in different rotor revolutions has been modified and improved to provide more precise and reliable results. A new approach to the analysis of the amplitude and time differences of impulse signals generated by a blade passage has been applied. Amplitudes and frequencies of vibrations and static position of blades ascertained by the diagnostic process are used to establish the state of blade damage. A contactless diagnostic system VDS-UT based on magneto-resistive sensors was developed in the Institute of Thermomechanics Academy of Sciences of the Czech Republic. The system provides on-line monitoring of vibration amplitudes and frequencies of all blades and notification of possible blade damage.Evaluation of the axial and circumferential components of the deflections by measuring the amplitude of blade impulse signals results in an overall improvement of the method.
    PracovištěÚstav termomechaniky
    KontaktMarie Kajprová, kajprova@it.cas.cz, Tel.: 266 053 154
    Rok sběru2012
    Elektronická adresahttp://iopscience.iop.org/1742-6596/305/1/012116