Publications

Johannes Wahl, Christian Frey, Michael Sawannia, Simon Olschok, Rudolf Weber, Christian Hagenlocher, Andreas Michalowski, and Thomas Graf. Measurement of the influence of the vapor plume on laser beam characteristics during laser beam welding. 2023. [PUMA: BeamCharacterisation Diagnostics Laser MacroMaterialProcessing ProcessDevelopement Welding YbYag myown]

Johannes Wahl, Christian Frey, Michael Sawannia, Simon Olschok, Rudolf Weber, Christian Hagenlocher, Andreas Michalowski, and Thomas Graf. Measurement of the influence of the vapor plume on laser beam characteristics during laser beam welding. 2023. [PUMA: YbYag myown Diagnostics Welding BeamCharacterisation Laser MacroMaterialProcessing ProcessDevelopement]

Johannes Wahl, Christian Frey, Michael Sawannia, Simon Olschok, Rudolf Weber, Christian Hagenlocher, Andreas Michalowski, and Thomas Graf. Measurement of the influence of the vapor plume on laser beam characteristics during laser beam welding. Fundamentals and Process Simulation, 2023. [PUMA: BeamCharacterisation Diagnostics Laser MacroMaterialProcessing ProcessDevelopement Welding YbYag myown]

Johannes Wahl, Christian Frey, Michael Sawannia, Simon Olschok, Rudolf Weber, Christian Hagenlocher, Andreas Michalowski, and Thomas Graf. Measurement of the influence of the vapor plume on laser beam characteristics during laser beam welding. Fundamentals and Process Simulation, 2023. [PUMA: YbYag myown Diagnostics Welding BeamCharacterisation Laser MacroMaterialProcessing ProcessDevelopement]

Johannes Wahl, Christian Frey, John Powell, Felix Zaiß, Michael Haas, Simon Olschok, Christian Hagenlocher, Uwe Reisgen, and Thomas Graf. Characterizing the effect of the vapor plume on laser beam characteristics during laser beam welding. 2024. [PUMA: BeamCharacterisation Diagnostics Laser MacroMaterialProcessing ProcessDevelopement Welding YbYag myown]

Johannes Wahl, Christian Frey, John Powell, Felix Zaiß, Michael Haas, Simon Olschok, Christian Hagenlocher, Uwe Reisgen, and Thomas Graf. Characterizing the effect of the vapor plume on laser beam characteristics during laser beam welding. 2024. [PUMA: YbYag myown Diagnostics Welding BeamCharacterisation Laser MacroMaterialProcessing ProcessDevelopement]

Johannes Wahl, Christian Frey, John Powell, Felix Zaiß, Michael Haas, Simon Olschok, Christian Hagenlocher, Uwe Reisgen, and Thomas Graf. Characterizing the effect of the vapor plume on laser beam characteristics during laser beam welding. In Stefan Kaierle, and Klaus R. Kleine (Eds.), High-Power Laser Materials Processing: Applications, Diagnostics, and Systems XIII, (12878)SPIE, March 2024. [PUMA: YbYag myown Diagnostics Welding BeamCharacterisation Laser MacroMaterialProcessing ProcessDevelopement] URL

Johannes Wahl, Christian Frey, John Powell, Felix Zaiß, Michael Haas, Simon Olschok, Christian Hagenlocher, Uwe Reisgen, and Thomas Graf. Characterizing the effect of the vapor plume on laser beam characteristics during laser beam welding. In Stefan Kaierle, and Klaus R. Kleine (Eds.), High-Power Laser Materials Processing: Applications, Diagnostics, and Systems XIII, (12878)SPIE, March 2024. [PUMA: BeamCharacterisation Diagnostics Laser MacroMaterialProcessing ProcessDevelopement Welding YbYag myown] URL

Michael Jarwitz, Jens Johannsen, Peter Stritt, Rudolf Weber, and Thomas Graf. Heat transfer and heat conduction during laser welding of Ni-sheets to Ni-foam. Lasers in Manufacturing 2015, 2015. [PUMA: LaserMatterInteraction Diagnostics Welding Laser MacroMaterialProcessing from:peterberger]

Daniel Weller, Peter Stritt, Christian Hagenlocher, Rudolf Weber, Thomas Graf, Jörg Simon, Cyrille Bezençon, and C. Bassi. Hot Crack formation when welding aluminum alloys at close-edge position with remote technology. Lasers in Manufacturing 2015, 2015. [PUMA: LaserMatterInteraction Diagnostics Welding Laser MacroMaterialProcessing from:peterberger]

Peter Berger, Helmut Hügel, and Thomas Graf. Understanding Pore Formation in Laser Beam Welding. Phsics Procedia, (12, Part A):0, Elsevier Ltd., Amsterdam, 2011. [PUMA: LaserMatterInteraction Diagnostics Welding Simulation Laser MacroMaterialProcessing Modeling from:peterberger]

Peter Berger, Helmut Hügel, and Thomas Graf. Understanding Pore Formation in Laser Beam Welding. Phsics Procedia, (12, Part A)Elsevier Ltd., Amsterdam, 2011. [PUMA: LaserMatterInteraction Diagnostics Welding Simulation Laser MacroMaterialProcessing Modeling from:peterberger]

Peter Berger, Helmut Hügel, Axel Heß, Rudolf Weber, and Thomas Graf. Understanding of Humping Based on Conservation of Volume Flow. Phsics Procedia, (12, Part A)Elsevier Ltd., Amsterdam, 2011. [PUMA: LaserMatterInteraction Diagnostics Welding Simulation Laser MacroMaterialProcessing Modeling from:peterberger]

Felix Abt, Meiko Boley, Rudolf Weber, Thomas Graf, G. Popko, and S. Nau. Novel X-ray system for in-situ diagnostics of laser based processes : First experimental results. Phsics Procedia, (12, Part A):761ff, Elsevier Ltd., Amsterdam, 2011. [PUMA: LaserMatterInteraction Diagnostics Welding Laser EnergyCoupling MacroMaterialProcessing Cutting from:peterberger]

Andreas Michalowski, Christian Freitag, Rudolf Weber, and Thomas Graf. Laser surface structuring with long depth of focus. Phsics Procedia, (12, Part A):357-361, Elsevier Ltd., Amsterdam, 2011. [PUMA: LaserMatterInteraction Diagnostics Welding Laser EnergyCoupling MacroMaterialProcessing from:peterberger]

Volkher Onuseit, Philipp Gärtner, Marwan Abdou Ahmed, Andreas Voß, Rudolf Weber, and Thomas Graf. Axially symmetric polarized laser beams materials processing. Lasers in Manufacturing 2009, AT-Fachverlag GmbH, Stuttgart, 2009. [PUMA: LaserMatterInteraction Diagnostics Laser MacroMaterialProcessing Cutting from:peterberger]

Felix Abt, Meiko Boley, Rudolf Weber, Thomas Graf, G. Popko, and S. Nau. Novel X-ray system for in-situ diagnostics of laser based processes : First experimental results. Phsics Procedia, (12, Part A):761ff, Elsevier Ltd., Amsterdam, 2011. [PUMA: Cutting Diagnostics EnergyCoupling Laser LaserMatterInteraction MacroMaterialProcessing Welding]

Peter Berger, Helmut Hügel, and Thomas Graf. Understanding Pore Formation in Laser Beam Welding. Phsics Procedia, (12, Part A):0, Elsevier Ltd., Amsterdam, 2011. [PUMA: Diagnostics Laser LaserMatterInteraction MacroMaterialProcessing Modeling Simulation Welding]

Volkher Onuseit, Philipp Gärtner, Marwan Abdou Ahmed, Andreas Voß, Rudolf Weber, and Thomas Graf. Axially symmetric polarized laser beams materials processing. Lasers in Manufacturing 2009, AT-Fachverlag GmbH, Stuttgart, 2009. [PUMA: Cutting Diagnostics Laser LaserMatterInteraction MacroMaterialProcessing]

Daniel Weller, Peter Stritt, Christian Hagenlocher, Rudolf Weber, Thomas Graf, Jörg Simon, Cyrille Bezençon, and C. Bassi. Hot Crack formation when welding aluminum alloys at close-edge position with remote technology. Lasers in Manufacturing 2015, 2015. [PUMA: Diagnostics Laser LaserMatterInteraction MacroMaterialProcessing Welding]