izpis_h1_title_alt

Intelligent location of two simultaneously active acoustic emission sources
Kosel, Tadej (Avtor), Grabec, Igor (Avtor), Kosel, Franc (Avtor)

URLURL - Predstavitvena datoteka, za dostop obiščite http://www.sciencedirect.com/science/journal/12709638 Novo okno

Izvleček
Acoustic emission (AE) analysis is used for characterization and location of developing defects in materials. The location of AE on complicated aircraft frame structures is a difficult problem of non-destructive testing. This article describes an intelligent AE source locator which comprises a sensor antenna and a general regression neural network, which solves the location problem based on learning from examples. The location accuracy achieved by theintelligent locator is comparable to that obtained by the conventional triangulation method, while the applicability of the intelligent locator is more general since analysis of sonic ray paths is avoided. AE sources often generate a mixture of various statistically independent signals. A difficult problem of AE analysis is separation and characterization of signal componentswhen the signals from various sources and the mode of mixing are unknown. Recently, blind source separation (BSS) by independent component analysis (ICA) has been used to solve these problems. The purpose of this paper is to demonstrate the applicability of ICA to separate and locate two independent simultaneously active AE sources on an aluminum band specimen. Themethod is promising for non-destructive testing of aircraft frame structures by acoustic emission analysis.

Jezik:Angleški jezik
Ključne besede:defects, non-destruction testing, acoustic emission, source location, blind source separation
Vrsta gradiva:Delo ni kategorizirano (r6)
Tipologija:1.01 - Izvirni znanstveni članek
Organizacija:FS - Fakulteta za strojništvo
Leto izida:2005
Št. strani:str. 45-53
Številčenje:Letn. 9, št. 1
UDK:534:620.1/.2
ISSN pri članku:1270-9638
COBISS.SI-ID:7862299 Povezava se odpre v novem oknu
Število ogledov:336
Število prenosov:181
Metapodatki:XML RDF-CHPDL DC-XML DC-RDF
 
Skupna ocena:(0 glasov)
Vaša ocena:Ocenjevanje je dovoljeno samo prijavljenim uporabnikom.
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Gradivo je del revije

Naslov:Aerospace science and technology
Skrajšan naslov:Aerosp. sci. technol.
Založnik:Elsevier, Gaulthier-Villars
ISSN:1270-9638
COBISS.SI-ID:22460165 Novo okno

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