Sensors and Methods for Blade Damage Operational Assessment in Low-Pressure Steam Turbine Stages

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61388998%3A_____%2F13%3A00396433" target="_blank" >RIV/61388998:_____/13:00396433 - isvavai.cz</a>

Result on the web

<a href="http://dx.doi.org/10.4028/www.scientific.net/KEM.569-570.726" target="_blank" >http://dx.doi.org/10.4028/www.scientific.net/KEM.569-570.726</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.4028/www.scientific.net/KEM.569-570.726" target="_blank" >10.4028/www.scientific.net/KEM.569-570.726</a>

Result language

angličtina

Original language name

Sensors and Methods for Blade Damage Operational Assessment in Low-Pressure Steam Turbine Stages

Original language description

The study deals with the opportunities for the assessment of damage to blades in low-pressure steam turbine stages under operation. So far existing methods are based on measurements and evaluation of blade vibrations. Calculations of fatigue cycles are used as a basis for an estimate of the residual life of the blades. A new approach using the analysis of impulse blade signals generated by non-contact stator sensors was applied. Basis for the assessment of blade damage are static characteristics and mutual position of blades. Geometrical and mechanical characteristics of blades change due to creation and progress of a crack. The presence of the crack leads to a change in position between adjacent blades. This method has been applied and verified by long-term measurements at the nuclear power plant Temelin. Other static methods based on blade untwisting and elongation are suggested for monitoring the state of turbine blades.

Czech name

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Czech description

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Type

J_x - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)

CEP classification

BI - Acoustics and oscillation

OECD FORD branch

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Project

<a href="/en/project/TA02020728" target="_blank" >TA02020728: Research and development of methods and appliances for contactless identification of turbine blade state</a><br>

Continuities

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year

2013

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Name of the periodical

Key Engineering Materials

ISSN

1013-9826

e-ISSN

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Volume of the periodical

569/570

Issue of the periodical within the volume

Jul

Country of publishing house

CH - SWITZERLAND

Number of pages

8

Pages from-to

726-733

UT code for WoS article

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EID of the result in the Scopus database

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