Spectroscopic studies of laser induced plume during welding with a Nd:YAG laser

Conference · Tue Dec 31 00:00:00 EST 1996

OSTI ID:522464

Lacroix, D; Jeandel, G ^[1]; Boudot, C ^[2]

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1. L.E.M.T.A., Vandoeuvre-les-Nancy (France). Faculte des Sciences
2. Centre Technique FRAMATOME, Le Creusot (France)

The authors study the laser-induced plume created during steel welding. The plume emission is measured with a spectrograph and a Photodiodes Array Detector (PDA). They study the evolution of temperature and electron density for several welding parameters (laser energy, pulse duration and shielding gases). Temperature and density calculations are based on the observation of line intensities and shapes. The other part of this study presents briefly a theoretical model which allows calculating the densities of each component of a complex plasma; like the one of stainless steel. These calculations yield the absorption of the laser energy in the plume.

• OSTI ID: 522464
• Report Number(s): CONF-9606246-; ISBN 0-8194-2175-8; TRN: IM9739%%185
• Resource Relation: Conference: Conference on high-power lasers - gas and solid state lasers, Besancon (France), 10-11 Jun 1996; Other Information: PBD: 1996; Related Information: Is Part Of High-power lasers: Applications and emerging applications; Sayegh, G.; Osborne, M.R. [eds.]; PB: 365 p.; Proceedings/SPIE, Volume 2789
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
LASER WELDING
PLASMA DIAGNOSTICS
STEELS
LASER-PRODUCED PLASMA
SPECTROSCOPY
TEMPERATURE DEPENDENCE
ELECTRON DENSITY
MATHEMATICAL MODELS