The influence of the coordinate errors of setting sensors of a piezoelectric antenna on the accuracy of localizing sources of acoustic-emission signals

The main factors that affect the error of determining the coordinates of an acoustic-emission (AE) signal source are considered. The influence of errors of determining coordinates ±Δ x i and ±Δ y i of piezoelectric-antenna transducers on the AE-signal localization accuracy are analyzed. It is theore...

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Bibliographic Details
Published in:Russian journal of nondestructive testing 2010-11, Vol.46 (11), p.803-809
Main Authors: Kareev, A. E., Stepanova, L. N., Tenitilov, E. S.
Format: Article
Language:English
Subjects:
Acoustic Methods
Acoustics
Characterization and Evaluation of Materials
Chemistry and Materials Science
Error analysis
Errors
Localization
Materials Science
Nondestructive testing
Piezoelectricity
Position (location)
Structural Materials
Transducers
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Summary:The main factors that affect the error of determining the coordinates of an acoustic-emission (AE) signal source are considered. The influence of errors of determining coordinates ±Δ x i and ±Δ y i of piezoelectric-antenna transducers on the AE-signal localization accuracy are analyzed. It is theoretically and experimentally proven that the errors in the coordinates of the transducers substantially influence the AE-signal localization accuracy, especially at a low sampling frequency of the analog-to-digital converter of the AE system’s measuring channel and when low-frequency AE transducers are used.
ISSN:1061-8309
1608-3385
DOI:10.1134/S1061830910110033