The Paton Welding Journal, 2004, №06

2004 №06 (05)

2004 №06 (07)

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The Paton Welding Journal, 2004, #6, 27-32 pages

Effect of polarisation of radiation on absorption of laser beam in deep-penetration welding

I.V. Krivtsun, A.N. Talerko

E.O. Paton Electric Welding Institute of the NASU 11 Kazymyr Malevych Str., 03150, Kyiv, Ukraine.

Abstract
Mathematical model has been developed to calculate the space distribution of power of laser radiation absorbed by the surface of a keyhole in deep-penetration laser welding. The model allows for the effect of focusing conditions of the initial beam, wavelength and polarisation of laser radiation on its absorption in the keyhole of an arbitrary shape, as well as multiple reflections of incident radiation from the keyhole surface. The model has shown that polarisation of laser radiation, shape and size of the keyhole have a substantial effect on the distributed and integrated characteristics of absorption of the laser beam by metal welded.
Keywords: laser welding, keyhole, laser beam, radiation polarisation, absorption coefficient, metal, surface

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Suggested Citation

I.V. Krivtsun, A.N. Talerko (2004) Effect of polarisation of radiation on absorption of laser beam in deep-penetration welding. The Paton Welding J., 06, 27-32.

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