Experimental verification of multi-physical modelling of the keyhole laser welding process

B.J. Aalderink; D.F. de Lange; R.G.K.M. Aarts; J. Meijer

doi:10.2351/1.5060848

Experimental verification of multi-physical modelling of the keyhole laser welding process

B.J. Aalderink, D.F. de Lange, R.G.K.M. Aarts, J. Meijer

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › Academic

5 Citations (Scopus)

Abstract

To investigate the influence of temperature dependant material properties on model results, 2D FEM calculations for thin sheets of AA5182 aluminium alloy were compared with real-time coaxial camera images of the laser welding process. The results show the importance of taking into account the latent heat of the solid-liquid phase transition in the model. Including temperature dependant values of the thermal conductivity and the specific heat slightly improved the model accuracy. The tendency of a shortening melt pool for higher values of the laser power could not be explained by this 2D model and is expected to be caused by a changing keyhole shape. In the FEM model results, the melt flow shows a clear recirculation with melt flowing forward on the centerline, from the tail region towards the keyhole.

Original language	English
Title of host publication	ICALEO 2006
Subtitle of host publication	25th International Congress on Applications of Lasers and Electro-Optics, Scottsdale, AZ USA, October 30-November 2
Editors	Andreas Ostendorf, Paul Hilton, Yongfeng Lu
Place of Publication	Orlando, FL
Publisher	Laser Institute of America
Pages	479-486
Number of pages	8
ISBN (Print)	0-912035-85-4
DOIs	https://doi.org/10.2351/1.5060848
Publication status	Published - 30 Oct 2006
Event	25th International Congress on Applications of Lasers & Electro-Optics, ICALEO 2006 - Scottsdale, United States Duration: 30 Oct 2006 → 2 Nov 2006 Conference number: 25

Conference

Conference	25th International Congress on Applications of Lasers & Electro-Optics, ICALEO 2006
Abbreviated title	ICALEO
Country	United States
City	Scottsdale
Period	30/10/06 → 2/11/06

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Keywords

METIS-232376

Cite this

Aalderink, B. J., de Lange, D. F., Aarts, R. G. K. M., & Meijer, J. (2006). Experimental verification of multi-physical modelling of the keyhole laser welding process. In A. Ostendorf, P. Hilton, & Y. Lu (Eds.), ICALEO 2006: 25th International Congress on Applications of Lasers and Electro-Optics, Scottsdale, AZ USA, October 30-November 2 (pp. 479-486). Orlando, FL: Laser Institute of America. https://doi.org/10.2351/1.5060848

Aalderink, B.J. ; de Lange, D.F. ; Aarts, R.G.K.M. ; Meijer, J. / Experimental verification of multi-physical modelling of the keyhole laser welding process. ICALEO 2006: 25th International Congress on Applications of Lasers and Electro-Optics, Scottsdale, AZ USA, October 30-November 2. editor / Andreas Ostendorf ; Paul Hilton ; Yongfeng Lu. Orlando, FL : Laser Institute of America, 2006. pp. 479-486

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abstract = "To investigate the influence of temperature dependant material properties on model results, 2D FEM calculations for thin sheets of AA5182 aluminium alloy were compared with real-time coaxial camera images of the laser welding process. The results show the importance of taking into account the latent heat of the solid-liquid phase transition in the model. Including temperature dependant values of the thermal conductivity and the specific heat slightly improved the model accuracy. The tendency of a shortening melt pool for higher values of the laser power could not be explained by this 2D model and is expected to be caused by a changing keyhole shape. In the FEM model results, the melt flow shows a clear recirculation with melt flowing forward on the centerline, from the tail region towards the keyhole.",

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Aalderink, BJ, de Lange, DF, Aarts, RGKM & Meijer, J 2006, Experimental verification of multi-physical modelling of the keyhole laser welding process. in A Ostendorf, P Hilton & Y Lu (eds), ICALEO 2006: 25th International Congress on Applications of Lasers and Electro-Optics, Scottsdale, AZ USA, October 30-November 2. Laser Institute of America, Orlando, FL, pp. 479-486, 25th International Congress on Applications of Lasers & Electro-Optics, ICALEO 2006, Scottsdale, United States, 30/10/06. https://doi.org/10.2351/1.5060848

Experimental verification of multi-physical modelling of the keyhole laser welding process. / Aalderink, B.J.; de Lange, D.F.; Aarts, R.G.K.M.; Meijer, J.

ICALEO 2006: 25th International Congress on Applications of Lasers and Electro-Optics, Scottsdale, AZ USA, October 30-November 2. ed. / Andreas Ostendorf; Paul Hilton; Yongfeng Lu. Orlando, FL : Laser Institute of America, 2006. p. 479-486.

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › Academic

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T1 - Experimental verification of multi-physical modelling of the keyhole laser welding process

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N2 - To investigate the influence of temperature dependant material properties on model results, 2D FEM calculations for thin sheets of AA5182 aluminium alloy were compared with real-time coaxial camera images of the laser welding process. The results show the importance of taking into account the latent heat of the solid-liquid phase transition in the model. Including temperature dependant values of the thermal conductivity and the specific heat slightly improved the model accuracy. The tendency of a shortening melt pool for higher values of the laser power could not be explained by this 2D model and is expected to be caused by a changing keyhole shape. In the FEM model results, the melt flow shows a clear recirculation with melt flowing forward on the centerline, from the tail region towards the keyhole.

AB - To investigate the influence of temperature dependant material properties on model results, 2D FEM calculations for thin sheets of AA5182 aluminium alloy were compared with real-time coaxial camera images of the laser welding process. The results show the importance of taking into account the latent heat of the solid-liquid phase transition in the model. Including temperature dependant values of the thermal conductivity and the specific heat slightly improved the model accuracy. The tendency of a shortening melt pool for higher values of the laser power could not be explained by this 2D model and is expected to be caused by a changing keyhole shape. In the FEM model results, the melt flow shows a clear recirculation with melt flowing forward on the centerline, from the tail region towards the keyhole.

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Aalderink BJ, de Lange DF, Aarts RGKM , Meijer J. Experimental verification of multi-physical modelling of the keyhole laser welding process. In Ostendorf A, Hilton P, Lu Y, editors, ICALEO 2006: 25th International Congress on Applications of Lasers and Electro-Optics, Scottsdale, AZ USA, October 30-November 2. Orlando, FL: Laser Institute of America. 2006. p. 479-486 https://doi.org/10.2351/1.5060848

Access to Document

10.2351/1.5060848