Cut-off cooling velocity profiling inside a keyhole model using the Boubaker polynomials expansion scheme

Cut-off cooling velocity profiling inside a keyhole model using the Boubaker polynomials expansion scheme

The time dependent heating and cooling velocities are investigated in this paper. The temperature profile is found by using a keyhole approximation for the melted zone and solving the heat transfer equation. A polynomial expansion has been deployed to determine the cooling velocity during welding cu...

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Veröffentlicht in:Heat and mass transfer 2009-08, Vol.45 (10), p.1247-1251
Hauptverfasser: Tabatabaei, S. Amir Hossein A. E., Zhao, Tinggang, Awojoyogbe, O. Bamidele, Moses, Folorunsho O.
Format: Artikel
Sprache:eng
Schlagworte:
Applied sciences
Engineering
Engineering Thermodynamics
Exact sciences and technology
Heat and Mass Transfer
Industrial Chemistry/Chemical Engineering
Joining, thermal cutting: metallurgical aspects
Metals. Metallurgy
Original
Thermodynamics
Welding
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Beschreibung
Zusammenfassung:The time dependent heating and cooling velocities are investigated in this paper. The temperature profile is found by using a keyhole approximation for the melted zone and solving the heat transfer equation. A polynomial expansion has been deployed to determine the cooling velocity during welding cut-off stage. The maximum cooling velocity has been estimated to be V max  ≈ 83°C s −1 .
ISSN:0947-7411
1432-1181
DOI:10.1007/s00231-009-0493-x