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Contribution to problem of current magnetizing sources calibration in NDT

Result description

Magnetising current sources used in NDT based on the magnetic particle methods have to guarantee magnetizing of the tested product into magnetic status when leakage fluxes rise above the crack or another macro defect. As known magnetising the ferromagnetic material beyond the maximum permeability fulfils the condition. For some technical materials it is deemed necessary to reach a magnetic field intensity 4 up to 5 kA/m by a magnetising source. Determination of this status is usually carried out by a coonversion into a required magnetizing current quantity for a given configuration of a testing device. For this reason the magnetizing source is adjustable and the current quantity is indicated by a measuring instrument with an analogue or a digital display.

Keywords

Non destructive testingmagnetic particle testcurrent sourcecalibration

The result's identifiers

Alternative languages

  • Result language

    angličtina

  • Original language name

    Contribution to problem of current magnetizing sources calibration in NDT

  • Original language description

    Magnetising current sources used in NDT based on the magnetic particle methods have to guarantee magnetizing of the tested product into magnetic status when leakage fluxes rise above the crack or another macro defect. As known magnetising the ferromagnetic material beyond the maximum permeability fulfils the condition. For some technical materials it is deemed necessary to reach a magnetic field intensity 4 up to 5 kA/m by a magnetising source. Determination of this status is usually carried out by a coonversion into a required magnetizing current quantity for a given configuration of a testing device. For this reason the magnetizing source is adjustable and the current quantity is indicated by a measuring instrument with an analogue or a digital display.

  • Czech name

    Příspěvek k problému kalibrace proudových magnetizačních zdrojů v NDT

  • Czech description

    Zdroje magnetovacího proudu užívané v NDT zajišťují magnetizaci testovaného objektu, přičemž dochází k úniku magnetického toku nad prasklinami a jinými makroskopickými defekty. K tomu je vhodná magnetizace feromagnetických materiálů nad hranicí nasycení.Pro některé technické materiály se ukazuje nezbytné dosáhnout magnetického pole s intenzitou 4 až 5 kA/m. Hodnota intenzity se nastavuje nepřímo pomocí velikosti magnetizačního proudu pro danou konfiguraci měřicího zařízení. Z tohoto důvodu jsou magneetizační zdroje nastavitelné a hodnota proudu je indikována analogovým nebo digitálním měřidlem.

Classification

  • Type

    D - Article in proceedings

  • CEP classification

    JS - Reliability and quality management, industrial testing

  • OECD FORD branch

Result continuities

Others

  • Publication year

    2005

  • Confidentiality

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

Data specific for result type

  • Article name in the collection

    34 Krajowa konferencja badaň nieniszacych

  • ISBN

    83-87982-61-x

  • ISSN

  • e-ISSN

  • Number of pages

    6

  • Pages from-to

    157-162

  • Publisher name

    PTBNiDT Warszawa

  • Place of publication

    Zakopane. Polsko

  • Event location

    Zakopane

  • Event date

    Oct 25, 2005

  • Type of event by nationality

    CST - Celostátní akce

  • UT code for WoS article

Basic information

Result type

D - Article in proceedings

D

CEP

JS - Reliability and quality management, industrial testing

Year of implementation

2005