Transient model for the keyhole during laser welding

Authors
Semak, VV Bragg, WD Damkroger, B Kempka, S
Citation
Vv. Semak et al., Transient model for the keyhole during laser welding, J PHYS D, 32(15), 1999, pp. L61-L64
Citations number
13
Categorie Soggetti
Apllied Physucs/Condensed Matter/Materiales Science
Journal title
JOURNAL OF PHYSICS D-APPLIED PHYSICS
ISSN journal
00223727 → ACNP
Volume
32
Issue
15
Year of publication
1999
Pages
L61 - L64
Database
ISI
SICI code
0022-3727(19990807)32:15<L61:TMFTKD>2.0.ZU;2-4
Abstract
A novel approach to simulating the dominant dynamic processes present durin g concentrated energy beam welding of metals is presented. A model for the transient behaviour of the front keyhole wall is developed. It is assumed t hat keyhole propagation is dominated by evaporation-recoil-driven melt expu lsion from the beam interaction zone. Results from the model show keyhole i nstabilities consistent with experimental observations of metal welding, me tal cutting and ice welding.