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
Result code in IS VaVaI
Result on the web
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DOI - Digital Object Identifier
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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
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Result continuities
Project
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)
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
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e-ISSN
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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
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Result type
D - Article in proceedings
CEP
JS - Reliability and quality management, industrial testing
Year of implementation
2005