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  • 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. (cs)
  • 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.
  • 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. (en)
Title
  • Contribution to problem of current magnetizing sources calibration in NDT
  • Contribution to problem of current magnetizing sources calibration in NDT (en)
  • Příspěvek k problému kalibrace proudových magnetizačních zdrojů v NDT (cs)
skos:prefLabel
  • Contribution to problem of current magnetizing sources calibration in NDT
  • Contribution to problem of current magnetizing sources calibration in NDT (en)
  • Příspěvek k problému kalibrace proudových magnetizačních zdrojů v NDT (cs)
skos:notation
  • RIV/00216305:26220/05:PU52766!RIV06-GA0-26220___
http://linked.open.../vavai/riv/strany
  • 157-162
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  • P(GA102/03/0241)
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  • 516326
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  • RIV/00216305:26220/05:PU52766
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  • Non destructive testing, magnetic particle test, current source, calibration (en)
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  • [FCF8FB11F7EB]
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  • Zakopane. Polsko
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  • 34 Krajowa konferencja badaň nieniszacych
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  • Rez, Jiří
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number of pages
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  • PTBNiDT Warszawa
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  • 83-87982-61-X
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  • 26220
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