Experimental Setup For MPI Sensitivity Measurements: First Results

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

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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.

Druh

D - Stať ve sborníku

CEP obor

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OECD FORD obor

20201 - Electrical and electronic engineering

Projekt

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Návaznosti

S - Specificky vyzkum na vysokych skolach

Rok uplatnění

2019

Kód důvěrnosti údajů

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

Název statě ve sborníku

NDT in Progress 2019

ISBN

978-80-87012-72-7

ISSN

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e-ISSN

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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

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