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  • Příspěvek pojednává o novém přístupu k měření koncentračních profilů, týkajících se redistribuce substitučních prvků v těsné blízkosti rozhraní svarového spoje dvou různých ocelí. Koncentrace byly měřeny ve třech liniích, kolmých na svarové rozhraní. Teoretickým základem vyhodnocení koncentračních profilů je 2. Fickův zákon. Parametry difúzní rovnice se určovaly metodou nelineární regrese. Tři soubory koncentračních dat analyzovaných prvků, naměřených na jednotlivých vzorcích, vedly k výpočtu difúzních koeficientů příslušných substitučních prvků a dalších parametrů difúzní rovnice. Původní je zde adaptace Levenberg-Marquardtova algoritmu pro řešení optimalizace parametrů difúzní rovnice. (cs)
  • This paper deals with new approach of measurement of the concentration profiles, concerning the redistribution of substitution elements in close vicinity of welded joint of two different steels. These concentrations have been measured in three straight lines in a plane perpendicular to the weld interface. The concentration profiles have been evaluated from experimental data by modelling of diffusion based on 2nd Fick?s law. Original computation program for nonlinear regression was evolved based on Levenberg - Marquardt`s algorithm for evaluation of diffusivities and other quantities. Three groups of measured data enable variations in methodology of their processing. If each group is processed individually then the possible differences in mutual position of concentration profiles offers the view on chemical heterogeneity of welded joint.
  • This paper deals with new approach of measurement of the concentration profiles, concerning the redistribution of substitution elements in close vicinity of welded joint of two different steels. These concentrations have been measured in three straight lines in a plane perpendicular to the weld interface. The concentration profiles have been evaluated from experimental data by modelling of diffusion based on 2nd Fick?s law. Original computation program for nonlinear regression was evolved based on Levenberg - Marquardt`s algorithm for evaluation of diffusivities and other quantities. Three groups of measured data enable variations in methodology of their processing. If each group is processed individually then the possible differences in mutual position of concentration profiles offers the view on chemical heterogeneity of welded joint. (en)
Title
  • On mathematical modelling of substitution elements diffusion in the neighbourhood of welded joint of steels
  • On mathematical modelling of substitution elements diffusion in the neighbourhood of welded joint of steels (en)
  • Matematické modelování difúze substitučních prvků v těsné blízkosti rozhraní svarového spoje ocelí (cs)
skos:prefLabel
  • On mathematical modelling of substitution elements diffusion in the neighbourhood of welded joint of steels
  • On mathematical modelling of substitution elements diffusion in the neighbourhood of welded joint of steels (en)
  • Matematické modelování difúze substitučních prvků v těsné blízkosti rozhraní svarového spoje ocelí (cs)
skos:notation
  • RIV/61989100:27360/07:00015795!RIV09-MSM-27360___
http://linked.open...avai/riv/aktivita
http://linked.open...avai/riv/aktivity
  • Z(MSM6198910013)
http://linked.open...vai/riv/dodaniDat
http://linked.open...aciTvurceVysledku
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http://linked.open...iv/duvernostUdaju
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http://linked.open...dnocenehoVysledku
  • 439252
http://linked.open...ai/riv/idVysledku
  • RIV/61989100:27360/07:00015795
http://linked.open...riv/jazykVysledku
http://linked.open.../riv/klicovaSlova
  • diffusion; modelling; welding; distribution of elements; optimalization (en)
http://linked.open.../riv/klicoveSlovo
http://linked.open...ontrolniKodProRIV
  • [4705B2E07613]
http://linked.open...v/mistoKonaniAkce
  • Brno
http://linked.open...i/riv/mistoVydani
  • Brno
http://linked.open...i/riv/nazevZdroje
  • Materials Sctructure and Micromechanics of Fracture
http://linked.open...in/vavai/riv/obor
http://linked.open...ichTvurcuVysledku
http://linked.open...cetTvurcuVysledku
http://linked.open...UplatneniVysledku
http://linked.open...iv/tvurceVysledku
  • Dobrovská, Jana
  • Stránský, Karel
  • Kalousek, Jaroslav
  • Řeháčková, Lenka
http://linked.open...vavai/riv/typAkce
http://linked.open.../riv/zahajeniAkce
http://linked.open...n/vavai/riv/zamer
number of pages
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  • Vysoká škola technická
https://schema.org/isbn
  • 978-80-214-3434-9
http://localhost/t...ganizacniJednotka
  • 27360
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