Diagnostics of Turbine Blades, Based on Estimation of Frequency Response Function
| Autor: | Hieronim Karbowiak, Jerzy Kotkowski, Jerzy Perczyński, Jarosław Spychała, Edward Rokicki, Paweł Lindstedt |
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| Jazyk: | angličtina |
| Rok vydání: | 2021 |
| Předmět: |
Frequency response
bode plot Turbine blade Computer science Acoustics vibration spectrum 02 engineering and technology law.invention 0203 mechanical engineering law 0502 economics and business operating deflection shape q factor Safety Risk Reliability and Quality frequency response function 050210 logistics & transportation T55-55.3 05 social sciences modal analysis vibration mode blade vibration 020303 mechanical engineering & transports resonance Industrial safety. Industrial accident prevention frequency response transfer function |
| Zdroj: | Journal of KONBiN, Vol 51, Iss 2, Pp 63-78 (2021) |
| ISSN: | 2083-4608 |
| Popis: | The aim of the study is to propose a diagnostics method based on blade’s vibration model in frequency domain. Amplitude spectrum A(ω) and phase spectrum φ(ω) have been experimentally identified which define transfer function G(jω) = P(ω) + jQ(ω) and their real P(ω) and imaginary Q(ω) parts. Transfer function G(jω) and resulting frequency, amplitude, phase characteristics and real P(ω) and imaginary Q(ω) parts are parts of blade’s diagnostics model. Changes in those characteristics are directly related to changes in the technical condition of the blades. It has been noticed that small changes in the technical condition cause large changes in frequency characteristics, which proves their usefulness in the diagnosis process. |
| Databáze: | OpenAIRE |
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