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@INPROCEEDINGS{Zaiss:615369,
      author       = {Zaiss, Felix and Haas, Michael and Powell, John and Wahl,
                      Johannes and Diegel, Christian and Schricker, Klaus and
                      Bergmann, Jean Pierre and Hummel, Marc and Spurk, Christoph
                      and Olowinsky, Alexander and Beckmann, Felix and Moosmann,
                      Julian and Hagenlocher, Christian and Graf, Thomas},
      title        = {{R}educing capillary depth fluctuations in high-speed laser
                      welding of stainless steel using multi-core laser
                      technology},
      journal      = {Procedia CIRP},
      volume       = {124},
      issn         = {2212-8271},
      address      = {Amsterdam [u.a.]},
      publisher    = {Elsevier},
      reportid     = {PUBDB-2024-06124},
      pages        = {413-417},
      year         = {2024},
      abstract     = {Laser welding was carried out in AISI304 (X5CrNi18-10)
                      stainless steel using a multi-core fiber laser. High-speed
                      X-ray imaging was used to monitor the process. When
                      employing core-power only (400W) at high welding speeds
                      (12m/min), the capillary depth was found to be inconsistent.
                      The capillary penetration into the material varied from
                      approximately 0.8 mm to approximately 0.2 mm, with
                      fluctuation periods of between single milliseconds and tens
                      of milliseconds. Employing a 0.5:0.5 ring-core power
                      distribution (390W:390W) to achieve the same penetration
                      (0.8mm) was found to reduce fluctuations in the depth of the
                      welding process and the capillary penetration. Possible
                      reasons for this reduction in depth fluctuations are
                      discussed together with a detailed description of the
                      resulting changes in weld cross-section.},
      month         = {Sep},
      date          = {2024-09-15},
      organization  = {13th CIRP Conference on Photonic
                       Technologies , Fürth (Germany), 15 Sep
                       2024 - 19 Sep 2024},
      cin          = {DOOR ; HAS-User / Hereon},
      ddc          = {670},
      cid          = {I:(DE-H253)HAS-User-20120731 / I:(DE-H253)Hereon-20210428},
      pnm          = {6G3 - PETRA III (DESY) (POF4-6G3) / DFG project 503306266 -
                      Wirkungsweisen ortsangepasster Intensitätsverteilungen auf
                      die beim Laserstrahltiefschweißen zur Spritzerbildung
                      führenden Mechanismen und deren zugrundliegende
                      Wechselwirkungsweisen bei hohen Schweißgeschwindigkeiten
                      (503306266) / DFG project G:(GEPRIS)236616214 - SFB 1120:
                      Bauteilpräzision durch Beherrschung von Schmelze und
                      Erstarrung in Produktionsprozessen (236616214)},
      pid          = {G:(DE-HGF)POF4-6G3 / G:(GEPRIS)503306266 /
                      G:(GEPRIS)236616214},
      experiment   = {EXP:(DE-H253)P-P07-20150101},
      typ          = {PUB:(DE-HGF)16 / PUB:(DE-HGF)8},
      doi          = {10.1016/j.procir.2024.08.144},
      url          = {https://bib-pubdb1.desy.de/record/615369},
}