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Analytical modeling of the keyhole including multiple reflections for analysis of the influence of different laser intensity distributions on keyhole geometry
BIAS – Bremer Institut für angewandte Strahltechnik GmbH, Bremen, Germany.ORCID iD: 0000-0003-0194-9018
BIAS – Bremer Institut für angewandte Strahltechnik GmbH, Bremen, Germany.
2013 (English)In: Lasers in Manufacturing (LIM 2013). Physics Procedia, ISSN 18753884, Vol. 41, p. 460-468Article in journal (Refereed) Published
Abstract [en]

An analytical model of the keyhole for deep penetration welding is presented. Based on a pressure and energy equilibrium the initial keyhole radii in different depths are calculated depending on different incident beam intensity distributions. Multiple reflections are included by using a ray tracing method in a second step to improve calculation of the keyhole shape. A Gaussian and a top hat beam profile are used for evaluation and show similar resulting keyhole geometries and different pressure gradients.

Place, publisher, year, edition, pages
Elsevier, 2013. Vol. 41, p. 460-468
Keywords [en]
Laser welding, Keyhole modeling, Multiple reflections, Intensity distribution
National Category
Other Mechanical Engineering
Identifiers
URN: urn:nbn:se:ltu:diva-72411DOI: 10.1016/j.phpro.2013.03.102ISI: 000321039300059Scopus ID: 2-s2.0-84893116339OAI: oai:DiVA.org:ltu-72411DiVA, id: diva2:1274364
Available from: 2018-12-30 Created: 2018-12-30 Last updated: 2019-02-21

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