Diagnostic methods of a bladed disc mode shape evaluation used for shrouded blades in steam turbines

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F49777513%3A23520%2F15%3A43926574" target="_blank" >RIV/49777513:23520/15:43926574 - isvavai.cz</a>
Result on the web
<a href="http://iopscience.iop.org/article/10.1088/1742-6596/659/1/012051/pdf" target="_blank" >http://iopscience.iop.org/article/10.1088/1742-6596/659/1/012051/pdf</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1088/1742-6596/659/1/012051" target="_blank" >10.1088/1742-6596/659/1/012051</a>

Result language
angličtina
Original language name
Diagnostic methods of a bladed disc mode shape evaluation used for shrouded blades in steam turbines
Original language description
This paper deals with advanced methods for the evaluation of a bladed disc behavior in terms of the wheel vibration and blade service time consumption. These methods are developed as parts of the noncontact vibration monitoring system of the steam turbine shrouded blades. The proposed methods utilize the time-frequency processing (cross spectra) and the method using least squares to analyse the data from the optical and magnetoresistive sensors, which are mounted in the stator radially above the rotor blades. Fundamentally, the blade vibrations are detected during the blade passages under the sensors and the following signal processing, which covers also the proposed methods, leads to the estimation of the blade residual service life. The prototype system implementing above mentioned techniques was installed into the last stage of the new steam turbine (LP part). The methods for bladed disc mode shape evaluation were successfully verified on the signals, which were obtained during the commission operation of the turbine.
Czech name
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Czech description
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Project
Result was created during the realization of more than one project. More information in the Projects tab.
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)<br>S - Specificky vyzkum na vysokych skolach

Publication year
2015
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Article name in the collection
Journal of Physics: Conference Series, Volume 659
ISBN
—
ISSN
1742-6588
e-ISSN
—
Number of pages
8
Pages from-to
1-8
Publisher name
IOP Publishing
Place of publication
Bristol
Event location
Plzeň, Česká Republika
Event date
Nov 19, 2015
Type of event by nationality
WRD - Celosvětová akce
UT code for WoS article
000368103000051

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