Failure analysis of Rotating Blades of Low-pressure Steam Turbine Rotors and Possibility of Prediction Corrosion-fatigue Ruptures.MATEC Web of Conference 188. 04020 (2018) ICEAF-V 2018. https://doi.org/10.1051/matecconf/201818804020

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F47718684%3A_____%2F18%3AN0000041" target="_blank" >RIV/47718684:_____/18:N0000041 - isvavai.cz</a>

Result on the web

<a href="http://dx.doi.org/10.1051/matecconf/201818804020" target="_blank" >http://dx.doi.org/10.1051/matecconf/201818804020</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1051/matecconf/201818804020" target="_blank" >10.1051/matecconf/201818804020</a>

Result language

angličtina

Original language name

Failure analysis of Rotating Blades of Low-pressure Steam Turbine Rotors and Possibility of Prediction Corrosion-fatigue Ruptures.MATEC Web of Conference 188. 04020 (2018) ICEAF-V 2018. https://doi.org/10.1051/matecconf/201818804020

Original language description

Over the last few years, corrosion fatigue fractures initiating from corrosion pits have been a root cause of failures of rotating blades of the third stage of the low-pressure parts in several 200 MW turbines in ČEZ, a. s. power stations. This contribution deals with the analysis of several of these failures. Metallurgical investigation of the blades showed that the cause of the failures was the initiation and growth of a fatigue crack from a corrosion pit. ČEZ, a. s. has developed, based on the knowledge obtained by EPRI (Electric Power Research Institute), a methodology which can, in real conditions during checks of turbines, reliably detect the parameters of corrosion pits and predict the possibility of development of fatigue damage from detected pits. The process of methodology and its uncertainties (influence of filling of pits with oxides, cyclic stress calculations, and the selection of the geometric factor Y) are summarized.

Czech name

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Czech description

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Type

J_ost - Miscellaneous article in a specialist periodical

CEP classification

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OECD FORD branch

20301 - Mechanical engineering

Project

<a href="/en/project/TE01020068" target="_blank" >TE01020068: Centre of research and experimental development of reliable energy production</a><br>

Continuities

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year

2018

Confidentiality

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

Name of the periodical

MATEC Web of Conferences

ISSN

2261-236X

e-ISSN

2261-236X

Volume of the periodical

188

Issue of the periodical within the volume

04020

Country of publishing house

FR - FRANCE

Number of pages

8

Pages from-to

1-8

UT code for WoS article

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EID of the result in the Scopus database

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