About: Time-Frequency Localization of Loose Parts in Nuclear Power Plants Based on Comparison with Lamb Waves

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rdf:type	skos:Concept http://linked.opendata.cz/ontology/domain/vavai/Vysledek
Description	A fundamental monitoring system in nuclear power plants is the so called loose part monitoring system (LPMS). Its primary goal is the detection of loose parts (such as rivets, nuts, ...), that can drift along the coolant flow and cause damage to the coolant system components, leading to power plant failure. One of the main tasks is the localization of the loose part impacts in order to identify the loose part and trace its motion in the system. Current methods based on vibration signal processing in the time domain are relatively inaccurate in localizing weaker impacts. In this paper, Lamb surface waves are reconstructed from measured vibration signals and used for impact localization. Wave propagation in component materials has a dispersive character, which is detectable in the time-frequency representation of the signal. Therefore, time-frequency analysis is used to compute the stress wave propagation. A fundamental monitoring system in nuclear power plants is the so called loose part monitoring system (LPMS). Its primary goal is the detection of loose parts (such as rivets, nuts, ...), that can drift along the coolant flow and cause damage to the coolant system components, leading to power plant failure. One of the main tasks is the localization of the loose part impacts in order to identify the loose part and trace its motion in the system. Current methods based on vibration signal processing in the time domain are relatively inaccurate in localizing weaker impacts. In this paper, Lamb surface waves are reconstructed from measured vibration signals and used for impact localization. Wave propagation in component materials has a dispersive character, which is detectable in the time-frequency representation of the signal. Therefore, time-frequency analysis is used to compute the stress wave propagation. (en)
Title	Time-Frequency Localization of Loose Parts in Nuclear Power Plants Based on Comparison with Lamb Waves Time-Frequency Localization of Loose Parts in Nuclear Power Plants Based on Comparison with Lamb Waves (en)
skos:prefLabel	Time-Frequency Localization of Loose Parts in Nuclear Power Plants Based on Comparison with Lamb Waves Time-Frequency Localization of Loose Parts in Nuclear Power Plants Based on Comparison with Lamb Waves (en)
skos:notation	RIV/49777513:23520/11:43898233!RIV12-MSM-23520___
http://linked.open...avai/riv/aktivita	S
http://linked.open...avai/riv/aktivity	S
http://linked.open...vai/riv/dodaniDat	2012
http://linked.open...aciTvurceVysledku	Janeček, Eduard Liška, Jindřich
http://linked.open.../riv/druhVysledku	O - Ostatní výsledky nezařaditelné do žádného z výše uvedených druhů výsledku
http://linked.open...iv/duvernostUdaju	S - Úplné a pravdivé údaje nepodléhající ochraně podle zvláštních právních předpisů
http://linked.open...titaPredkladatele	Západočeská univerzita v Plzni / Fakulta aplikovaných věd
http://linked.open...dnocenehoVysledku	235379
http://linked.open...ai/riv/idVysledku	RIV/49777513:23520/11:43898233
http://linked.open...riv/jazykVysledku	eng - angličtina
http://linked.open.../riv/klicovaSlova	nuclear power plant, diagnostics, loose part, signal processing, time-frequency analysis, localization (en)
http://linked.open.../riv/klicoveSlovo	nuclear power plant time-frequency analysis diagnostics signal processing loose part localization
http://linked.open...ontrolniKodProRIV	[1463FDAE5592]
http://linked.open...in/vavai/riv/obor	JF
http://linked.open...ichTvurcuVysledku	2 (xsd:int)
http://linked.open...cetTvurcuVysledku	2 (xsd:int)
http://linked.open...UplatneniVysledku	2011
http://linked.open...iv/tvurceVysledku	Janeček, Eduard Liška, Jindřich
http://localhost/t...ganizacniJednotka	23520

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