New automatic localization technique of acoustic emission signals in thin metal plates
Popis výsledku
In acoustic emission (AE) measurement, the information of the arrival time is very important for event location, event identification and source mechanism analysis. Manual picks are time-consuming and sometimes subjective, especially in the case of largevolumes of digital data. Various techniques have been presented in the literature and are routinely used in practice such as amplitude threshold, analysis of the long-term average/short-term average (LTA/STA), high-order statistics or artificial neuralnetworks. A new automatic determination technique of the first arrival times of AE signals is presented for thin metal plates. Based on Akaike's information criterion, proposed algorithm of the first arrival detection uses a specific characteristic function, which is sensitive to change of frequency in contrast to others such as envelope of the signal. The approach is applied to data sets of three different tests. Reliable results show the potential of our approach.
Klíčová slova
Acoustic emissionFirst arrivalAkaike's information criterionThin metal plates
Identifikátory výsledku
Kód výsledku v IS VaVaI
Výsledek na webu
—
DOI - Digital Object Identifier
—
Alternativní jazyky
Jazyk výsledku
angličtina
Název v původním jazyce
New automatic localization technique of acoustic emission signals in thin metal plates
Popis výsledku v původním jazyce
In acoustic emission (AE) measurement, the information of the arrival time is very important for event location, event identification and source mechanism analysis. Manual picks are time-consuming and sometimes subjective, especially in the case of largevolumes of digital data. Various techniques have been presented in the literature and are routinely used in practice such as amplitude threshold, analysis of the long-term average/short-term average (LTA/STA), high-order statistics or artificial neuralnetworks. A new automatic determination technique of the first arrival times of AE signals is presented for thin metal plates. Based on Akaike's information criterion, proposed algorithm of the first arrival detection uses a specific characteristic function, which is sensitive to change of frequency in contrast to others such as envelope of the signal. The approach is applied to data sets of three different tests. Reliable results show the potential of our approach.
Název v anglickém jazyce
New automatic localization technique of acoustic emission signals in thin metal plates
Popis výsledku anglicky
In acoustic emission (AE) measurement, the information of the arrival time is very important for event location, event identification and source mechanism analysis. Manual picks are time-consuming and sometimes subjective, especially in the case of largevolumes of digital data. Various techniques have been presented in the literature and are routinely used in practice such as amplitude threshold, analysis of the long-term average/short-term average (LTA/STA), high-order statistics or artificial neuralnetworks. A new automatic determination technique of the first arrival times of AE signals is presented for thin metal plates. Based on Akaike's information criterion, proposed algorithm of the first arrival detection uses a specific characteristic function, which is sensitive to change of frequency in contrast to others such as envelope of the signal. The approach is applied to data sets of three different tests. Reliable results show the potential of our approach.
Klasifikace
Druh
Jx - Nezařazeno - Článek v odborném periodiku (Jimp, Jsc a Jost)
CEP obor
BM - Fyzika pevných látek a magnetismus
OECD FORD obor
—
Návaznosti výsledku
Projekt
GA106/07/1393: Nelineární ultrazvuková spektroskopie kompozitů a slitin na bázi hořčíku
Návaznosti
Z - Vyzkumny zamer (s odkazem do CEZ)
Ostatní
Rok uplatnění
2009
Kód důvěrnosti údajů
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Údaje specifické pro druh výsledku
Název periodika
ULTRASONICS
ISSN
0041-624X
e-ISSN
—
Svazek periodika
49
Číslo periodika v rámci svazku
2
Stát vydavatele periodika
NL - Nizozemsko
Počet stran výsledku
9
Strana od-do
—
Kód UT WoS článku
—
EID výsledku v databázi Scopus
—
Základní informace
Druh výsledku
Jx - Nezařazeno - Článek v odborném periodiku (Jimp, Jsc a Jost)
CEP
BM - Fyzika pevných látek a magnetismus
Rok uplatnění
2009