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 proceedingConference contributionAcademic

    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 languageEnglish
    Title of host publicationICALEO 2006
    Subtitle of host publication25th International Congress on Applications of Lasers and Electro-Optics, Scottsdale, AZ USA, October 30-November 2
    EditorsAndreas Ostendorf, Paul Hilton, Yongfeng Lu
    Place of PublicationOrlando, FL
    PublisherLaser Institute of America
    Pages479-486
    Number of pages8
    ISBN (Print)0-912035-85-4
    DOIs
    Publication statusPublished - 30 Oct 2006
    Event25th International Congress on Applications of Lasers & Electro-Optics, ICALEO 2006 - Scottsdale, United States
    Duration: 30 Oct 20062 Nov 2006
    Conference number: 25

    Conference

    Conference25th International Congress on Applications of Lasers & Electro-Optics, ICALEO 2006
    Abbreviated titleICALEO
    CountryUnited States
    CityScottsdale
    Period30/10/062/11/06

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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