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New Numerical and Statistical Determination of Probes’ Arrangement in Turbo-machinery
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SYSNO ASEP 0563511 Document Type J - Journal Article R&D Document Type Journal Article Subsidiary J Článek ve WOS Title New Numerical and Statistical Determination of Probes’ Arrangement in Turbo-machinery Author(s) Tchawou Tchuisseu, Eder Batista (UT-L) ORCID
Procházka, Pavel (UT-L) RID, ORCID
Mekhalfia, Mohammed Lamine (UT-L)
Hodboď, Robert (UT-L)
Maturkanič, Dušan (UT-L)
Russhard, P. (GB)
Brabec, Marek (UIVT-O) RID, SAI, ORCIDNumber of authors 7 Source Title Journal of Vibration Engineering & Technologies. - : Springer - ISSN 2523-3920
Roč. 11, č. 5 (2023), s. 2025-2035Number of pages 11 s. Publication form Print - P Language eng - English Country DE - Germany Keywords blade tip-timing ; probe positioning ; optimization ; under-sampled Subject RIV BI - Acoustics OECD category Applied mechanics R&D Projects EF15_003/0000493 GA MŠMT - Ministry of Education, Youth and Sports (MEYS) Method of publishing Limited access Institutional support UT-L - RVO:61388998 ; UIVT-O - RVO:67985807 UT WOS 000854744100001 EID SCOPUS 85138172104 DOI 10.1007/s42417-022-00685-8 Annotation Purpose Blade tip timing (BTT) is a promising non-contact method for the measurements of blade tip displacement in turbo-machinery. Despite the advantages, this method offers, one of its drawbacks is the highly under-sampled data measured. The quality of these data depends on the position of the probes in the engine casing. This work aims to determine the placement of the probes for which the highest quality of data, hence the best accuracy of the vibration parameters are obtained. Methods Thus, the present work proposes a statistical BTT method based on the minimization of some statistical variables to determine the placement of the probes. Results This work presents a defined number of probes, which of the regular and irregular probe arrangement leads to the determination of vibration parameters with higher accuracy. It is found that mostly all the subsets with probes irregularly spaced are the ones giving a better accurate estimation of the amplitudes. Conclusion This work has proposed statistical methods of determination of the probes arrangement, based on the minimization of the RMSE in the case of synchronous vibrations and the combination of synchronous and asynchronous vibrations. In addition, we have shown statistically that in almost all the scenarios considered, the irregular probe placements are the ones for which the vibration parameters are obtained with the highest accuracy. Workplace Institute of Thermomechanics Contact Marie Kajprová, kajprova@it.cas.cz, Tel.: 266 053 154 ; Jana Lahovská, jaja@it.cas.cz, Tel.: 266 053 823 Year of Publishing 2024 Electronic address https://link.springer.com/article/10.1007/s42417-022-00685-8
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