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Experimental Setup For MPI Sensitivity Measurements: First Results

Identifikátory výsledku

  • Kód výsledku v IS VaVaI

    <a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21230%2F19%3A00334351" target="_blank" >RIV/68407700:21230/19:00334351 - isvavai.cz</a>

  • Výsledek na webu

    <a href="https://www.ndt.net/search/docs.php3?id=24800" target="_blank" >https://www.ndt.net/search/docs.php3?id=24800</a>

  • DOI - Digital Object Identifier

Alternativní jazyky

  • Jazyk výsledku

    angličtina

  • Název v původním jazyce

    Experimental Setup For MPI Sensitivity Measurements: First Results

  • Popis výsledku v původním jazyce

    During the development process of MPI equipment it is very helpful to know the detection ability of the MPI process. Such an ability depends on material properties of the body under the test, applied magnetic field, defect shape and size, and detection particle properties. There is not enough information published, therefore in-house experiments are justified. This paper aims to present an experimental setup for MPI sensitivity measurement. The setup consists of four coils and two steel plates attached to the coils. The steel plates are magnetized by the flux generated by the coils. The coils are situated at the vertices of a square and the opposite coils are electrically connected in series therefore the setup can be fed by two independent current waveforms. These current waveforms generate two perpendicular magnetic field components on the plates so it is possible to generate arbitrary tangential magnetization on the surfaces of the steel plates. A standard shim gauge is placed on the steel plate in the middle of the coils. If the setup is fed by two sine waveforms of the same frequency and arbitrary phase shift, the tangential magnetization of the steel plates is elliptical polarized. The coils are fed from a pair of arbitrary-waveform generators amplified by a pair of power amplifiers. Using this setup the sensitivity of MPI can be measured for various input parameters. Measurement setup as well as first experimental results are presented in this paper.

  • Název v anglickém jazyce

    Experimental Setup For MPI Sensitivity Measurements: First Results

  • Popis výsledku anglicky

    During the development process of MPI equipment it is very helpful to know the detection ability of the MPI process. Such an ability depends on material properties of the body under the test, applied magnetic field, defect shape and size, and detection particle properties. There is not enough information published, therefore in-house experiments are justified. This paper aims to present an experimental setup for MPI sensitivity measurement. The setup consists of four coils and two steel plates attached to the coils. The steel plates are magnetized by the flux generated by the coils. The coils are situated at the vertices of a square and the opposite coils are electrically connected in series therefore the setup can be fed by two independent current waveforms. These current waveforms generate two perpendicular magnetic field components on the plates so it is possible to generate arbitrary tangential magnetization on the surfaces of the steel plates. A standard shim gauge is placed on the steel plate in the middle of the coils. If the setup is fed by two sine waveforms of the same frequency and arbitrary phase shift, the tangential magnetization of the steel plates is elliptical polarized. The coils are fed from a pair of arbitrary-waveform generators amplified by a pair of power amplifiers. Using this setup the sensitivity of MPI can be measured for various input parameters. Measurement setup as well as first experimental results are presented in this paper.

Klasifikace

  • Druh

    D - Stať ve sborníku

  • CEP obor

  • OECD FORD obor

    20201 - Electrical and electronic engineering

Návaznosti výsledku

  • Projekt

  • Návaznosti

    S - Specificky vyzkum na vysokych skolach

Ostatní

  • Rok uplatnění

    2019

  • Kód důvěrnosti údajů

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

Údaje specifické pro druh výsledku

  • Název statě ve sborníku

    NDT in Progress 2019

  • ISBN

    978-80-87012-72-7

  • ISSN

  • e-ISSN

  • Počet stran výsledku

    4

  • Strana od-do

    71-74

  • Název nakladatele

    Institute of Thermomechanics, AS CR, v.v.i.

  • Místo vydání

    Prague

  • Místo konání akce

    Prague

  • Datum konání akce

    7. 10. 2019

  • Typ akce podle státní příslušnosti

    WRD - Celosvětová akce

  • Kód UT WoS článku