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Role of surface tension driven convection in pulsed - laser melting and solidification

Ravindran, K and Srinivasan, J and Marathe, AG (1995) Role of surface tension driven convection in pulsed - laser melting and solidification. In: Proceedings of the Institution of Mechanical Engineers - Part B: Journal of Engineering Manufacture, 209 (1). pp. 75-82.

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Abstract

Surface melting by a stationary, pulsed laser has been modelled by the finite element method. The role of the surface tension driven convection is investigated in detail. Numerical results are presented for a triangular laser pulse of durations 10, 50 and 200 ms. Though the magnitude of the velocity is high due to the surface tension forces, the present results indicate that a finite time is required for convection to affect the temperature distribution within the melt pool. The effect of convection is very significant for pulse durations longer than 10 ms.

Item Type: Journal Article
Additional Information: Copyright of this article belongs to Professional Engineering Publishing.
Keywords: Manufacturing
Department/Centre: Division of Mechanical Sciences > Mechanical Engineering
Date Deposited: 24 May 2011 09:07
Last Modified: 24 May 2011 09:07
URI: http://eprints.iisc.ernet.in/id/eprint/37883

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