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

The result's identifiers

  • 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

  • DOI - Digital Object Identifier

Alternative languages

  • 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

  • Czech description

Classification

  • Type

    D - Article in proceedings

  • CEP classification

  • OECD FORD branch

    10307 - Acoustics

Result continuities

  • Project

  • Continuities

    I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Others

  • Publication year

    2017

  • Confidentiality

    S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Data specific for result type

  • Article name in the collection

    Application of contemporary non-destructive testing in engineering

  • ISBN

    978-961-93537-2-1

  • ISSN

  • e-ISSN

  • 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