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Experimental and theoretical cooling velocity profile inside laser welded metals using keyhole approximation and Boubaker polynomials expansion |
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| Authors: | Belhadj Asma Bessrour Jamel Bouhafs Mahmoud Barrallier Laurent |
| Affiliation: | 1.U.R. MA2I - L. MECASURF, ENIT - Art et Métiers ParisTech, Aix-en-Provence, France ;2.U.R. MA2I, ENIT, Tunis, Tunisia ;3.L. MECASURF, Art et Métiers ParisTech, Aix-en-Provence, France ; |
| Abstract: | In this paper we are concerned with the t-dependent cooling velocity during laser welding sequences. The temperature profile has been yielded by using keyhole approximation for the melted zone and solving the heat transfer equation. A polynomial expansion has been adopted as a guide to determining the cooling velocity during welding cut-off stage. A thorough comparison with experimental results and recently published profiles has been carried out. |
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