Original title: Mapping of problematic regions in AE source location
Authors: Chlada, Milan ; Převorovský, Zdeněk
Document type: Papers
Conference/Event: International Workshop of NDT Experts /9./, Praha (CZ), 20171009
Year: 2017
Language: eng
Abstract: Similarly to Global Positioning System, location of material defects by acoustic emission method meets the geometrical dilution of precision (GDOP) phenomena. Besides the several attitudes how to mathematically express its measure and compare particular sensor configurations in accordance with desired location precision, recently proposed method brings extended possibilities for detection of critical regions characterized by strong sensitivity of location results to signal arrival time changes or errors. Analogically to GDOP parameter it yields the sensitivity map available even for non-continuous or anisotropic materials. During the computation it uses the algorithm for finding the shortest ways in discretely defined bodies, which furthermore enables to view the problem through the so-called similarity and ambiguity maps.
Keywords: acoustic emission; geometrical dilution of precision; source location
Project no.: GA17-22615S (CEP)
Funding provider: GA ČR
Host item entry: NDT in PROGRESS, ISBN 978-80-87012-63-5

Institution: Institute of Thermomechanics AS ČR (web)
Document availability information: Fulltext is available at the institute of the Academy of Sciences.
Original record: http://hdl.handle.net/11104/0279210

Permalink: http://www.nusl.cz/ntk/nusl-371064


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Research > Institutes ASCR > Institute of Thermomechanics
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