About: Multilevel analysis of continuous AE from helicopter gearbox

Facets (new session)
Description
Metadata
Settings
- owl:sameAs
- Inference Rule:

About: Multilevel analysis of continuous AE from helicopter gearbox Goto Sponge NotDistinct Permalink

An Entity of Type : http://linked.opendata.cz/ontology/domain/vavai/Vysledek, within Data Space : linked.opendata.cz associated with source document(s)

Attributes	Values
rdf:type	skos:Concept http://linked.opendata.cz/ontology/domain/vavai/Vysledek
Description	Acoustic Emission (AE) analyzers for the purpose of structural health or condition monitoring should provide longtime continuous signal records with relatively high sampling frequency. Recorded huge data must be analyzed to disclose any faults in monitored processes or structures like e.g. leakages in pressure vessels or defects in rotating machines and gearboxes, etc. Fast and reliable AE signal processing and analyzing methods are required. In this paper we present such analysis of continuous AE recorded during tests of renovated helicopter gearboxes. Four-channel continuous AE recording system with 4 MHz sampling rate was used in the tests performed under variable 'flight' simulation regimes. As an alternative to classical spectrogram analysis, we proposed to use histograms of time intervals between crossings of threshold amplitudes (multilevel counting) in the wavelet decomposition details. Results obtained on long-time records are discussed. Acoustic Emission (AE) analyzers for the purpose of structural health or condition monitoring should provide longtime continuous signal records with relatively high sampling frequency. Recorded huge data must be analyzed to disclose any faults in monitored processes or structures like e.g. leakages in pressure vessels or defects in rotating machines and gearboxes, etc. Fast and reliable AE signal processing and analyzing methods are required. In this paper we present such analysis of continuous AE recorded during tests of renovated helicopter gearboxes. Four-channel continuous AE recording system with 4 MHz sampling rate was used in the tests performed under variable 'flight' simulation regimes. As an alternative to classical spectrogram analysis, we proposed to use histograms of time intervals between crossings of threshold amplitudes (multilevel counting) in the wavelet decomposition details. Results obtained on long-time records are discussed. (en)
Title	Multilevel analysis of continuous AE from helicopter gearbox Multilevel analysis of continuous AE from helicopter gearbox (en)
skos:prefLabel	Multilevel analysis of continuous AE from helicopter gearbox Multilevel analysis of continuous AE from helicopter gearbox (en)
skos:notation	RIV/61388998:_____/14:00438589!RIV15-MPO-61388998
http://linked.open...avai/riv/aktivita	I P
http://linked.open...avai/riv/aktivity	I, P(FR-TI3/755)
http://linked.open...vai/riv/dodaniDat	2015
http://linked.open...aciTvurceVysledku	Heřmánek, Jan Chlada, Milan Převorovský, Zdeněk Krofta, Josef
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	Ústav termomechaniky AV ČR, v. v. i.
http://linked.open...dnocenehoVysledku	31028
http://linked.open...ai/riv/idVysledku	RIV/61388998:_____/14:00438589
http://linked.open...riv/jazykVysledku	eng - angličtina
http://linked.open.../riv/klicovaSlova	structural health monitoring (SHM); signal processing; acoustic emission (AE); diagnostics of helicopter gearbox; wavelet analysis; continuous acoustic emission (en)
http://linked.open.../riv/klicoveSlovo	diagnostics of helicopter gearbox structural health monitoring (SHM) signal processing continuous acoustic emission wavelet analysis acoustic emission (AE)
http://linked.open...ontrolniKodProRIV	[BE9A76D6370D]
http://linked.open...in/vavai/riv/obor	JU
http://linked.open...ichTvurcuVysledku	4 (xsd:int)
http://linked.open...cetTvurcuVysledku	4 (xsd:int)
http://linked.open...vavai/riv/projekt	*Modernisation of diagnostics system for helicopter engine and drive unit
http://linked.open...UplatneniVysledku	2014
http://linked.open...iv/tvurceVysledku	Převorovský, Zdeněk Chlada, Milan Krofta, Josef Heřmánek, Jan

Faceted Search & Find service v1.16.116 as of Feb 22 2024

Alternative Linked Data Documents: ODE Content Formats:

RDF

ODATA

Microdata

About

OpenLink Virtuoso version 07.20.3239 as of Feb 22 2024, on Linux (x86_64-pc-linux-gnu), Single-Server Edition (126 GB total memory, 67 GB memory in use)
Data on this page belongs to its respective rights holders.
Virtuoso Faceted Browser Copyright © 2009-2024 OpenLink Software