Detail publikace

New automatic localization technique of acoustic emission signals in thin metal plates

SEDLÁK, P. HIROSE, Y. KHAN, S. ENOKI, M. ŠIKULA, J.

Originální název

New automatic localization technique of acoustic emission signals in thin metal plates

Typ

článek v časopise - ostatní, Jost

Jazyk

angličtina

Originální abstrakt

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 large volumes 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 neural networks. 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 emission; First arrival; Akaike's information criterion; Thin metal plates

Autoři

SEDLÁK, P.; HIROSE, Y.; KHAN, S.; ENOKI, M.; ŠIKULA, J.

Rok RIV

2009

Vydáno

1. 2. 2009

Nakladatel

Elsevier

Místo

online doi:10.1016/j.ultras.2008.09.005

ISSN

0041-624X

Periodikum

ULTRASONICS

Ročník

49

Číslo

2

Stát

Nizozemsko

Strany od

254

Strany do

262

Strany počet

9

URL

http://www.sciencedirect.com/science/article/pii/S0041624X08001698

BibTex

@article{BUT48947,
  author="Petr {Sedlák} and Yuichiro {Hirose} and Sabrina A. {Khan} and Manabu {Enoki} and Josef {Šikula}",
  title="New automatic localization technique of acoustic emission signals in thin metal plates",
  journal="ULTRASONICS",
  year="2009",
  volume="49",
  number="2",
  pages="254--262",
  doi="10.1016/j.ultras.2008.09.005",
  issn="0041-624X",
  url="http://www.sciencedirect.com/science/article/pii/S0041624X08001698"
}