Location of two simultaneously active continuous acoustic emission sources on an aluminum beam

Acoustic emission analysis (AE) is used for characterization and location of developing defects in materials. AE sources often generate a mixture of various statistically independent signals. One difficult problem of AE analysis is the separation and characterization of signal components when the si...

Full description

Saved in:
Bibliographic Details
Published in:AIRCR ENG AEROSP TECHNOL 2002-01, Vol.74 (1), p.4-8
Main Authors: Kosel, Tadej, Grabec, Igor
Format: Article
Language:English
Subjects:
Acoustics
Aerospace industry
Aluminum
Aluminum beams and girders
Blind source separation
Correlation methods
Defects
Experiments
Independent component analysis
Measuring instruments
Methods
Problem solving
Quality control
Sensors
Signal processing
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:Acoustic emission analysis (AE) is used for characterization and location of developing defects in materials. AE sources often generate a mixture of various statistically independent signals. One difficult problem of AE analysis is the separation and characterization of signal components when the signals from various sources and the way in which the signals were mixed are unknown. Recently, blind source separation (BSS) by independent component analysis (ICA) has been used to solve these problems. The main purpose of this paper is to demonstrate the applicability of ICA to time-delay estimation of two independent continuous AE sources on an aluminum beam. It is shown that it is possible to estimate time delays by ICA, and thus to locate two independent simultaneously emitted sources.
ISSN:1748-8842
0002-2667
1758-4213
DOI:10.1108/00022660210414967