Analytical Modeling of Acoustic Emission Signals in Thin-Walled Objects

For the effective detection of acoustic emission (AE) impulses against a noisy background, the correct assessment of AE parameters, and an increase in defect location accuracy during data processing are needed. For these goals, it is necessary to consider the waveform of the AE impulse. The results...

Full description

Saved in:
Bibliographic Details
Published in:Applied sciences 2020-01, Vol.10 (1), p.279
Main Authors: Barat, Vera, Terentyev, Denis, Bardakov, Vladimir, Elizarov, Sergey
Format: Article
Language:English
Subjects:
acoustic emission
attenuation of acoustic emission waves
lamb waves
modal analysis
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:For the effective detection of acoustic emission (AE) impulses against a noisy background, the correct assessment of AE parameters, and an increase in defect location accuracy during data processing are needed. For these goals, it is necessary to consider the waveform of the AE impulse. The results of numerous studies have shown that the waveforms of AE impulses mainly depend on the properties of the waveguide, the path along which the signal propagates from the source to the sensor. In this paper, the analytical method for modeling of AE signals is considered. This model allows one to obtain model signals that have the same spectrum and waveform as real signals. Based on the obtained results, the attenuation parameters of the AE waves for various characteristics of the waveguide are obtained and the probability of defect detection at various distances between the AE source and sensor utilized for evaluation.
ISSN:2076-3417
2076-3417
DOI:10.3390/app10010279