Acoustic emission source localization based on exact geodesic curves (with application to watering can)

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61388998%3A_____%2F17%3A00484039" target="_blank" >RIV/61388998:_____/17:00484039 - isvavai.cz</a>
Result on the web
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DOI - Digital Object Identifier
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Result language
angličtina
Original language name
Acoustic emission source localization based on exact geodesic curves (with application to watering can)
Original language description
We deal with the exact model of localization of acoustic emission (AE) sources on real complex solid bodies. Our approach is based on numerical computations of precise geodesic curves on 3D vessels which can be composed from several parametrized surfaces with multiple intersections. Instead of solving the geodesic differential equations under specific Christoffel symbols, we compute our geodesics numerically by Finite Difference, Newton–Raphson, and Fixed Point Iteration methods. For faster calculations we propose technical improvements and optimizations. We also consider the case when the surface contains the holes, i.e. the exact geodesic curve has to bypass a given obstacles. These techniques are used in real experiment on the galvanized steel watering can that represents a vessel with higher geometrical complexity. The layout of piezoelectric acoustic emission sensors supposes that the main part of the body can be inaccessible due to high temperature or radioactivity, such as in the case of nuclear power station health monitoring. Finally, we present the results of AE localization principle using length (or time) differences measured by means of geodesics found on the watering can while minimizing its distinctions from the real time differences measured.
Czech name
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Czech description
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Project
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Continuities
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year
2017
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Article name in the collection
Application of contemporary non-destructive testing in engineering
ISBN
978-961-93537-2-1
ISSN
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e-ISSN
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Number of pages
7
Pages from-to
313-319
Publisher name
Slovenian Society for Non-Destructive Testing
Place of publication
Ljubljana, Slovenia
Event location
St. Bernardin / Portorož
Event date
Sep 4, 2017
Type of event by nationality
WRD - Celosvětová akce
UT code for WoS article
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