Conference Agenda

Overview and details of the sessions of this conference. Please select a date or location to show only sessions at that day or location. Please select a single session for detailed view (with abstracts and downloads if available).

Please note that all times are shown in the time zone of the conference. The current conference time is: 6th Dec 2021, 12:01:06pm CET

 
Only Sessions at Location/Venue 
 
 
Program for LiM 2021
Location: Room 1
ICM Ground Floor 125
Date: Monday, 21/June/2021
1:00pm
-
1:40pm
Welcome and WLT Award Ceremony
Location: Room 1
Chair: Prof. Michael Rethmeier, Bundesanstalt für Materialforschung und -prüfung (BAM), Germany
Chair: Prof. Ludger Overmeyer, Laser Zentrum Hannover e.V., Germany
 

Welcome to LiM

Ludger Overmeyer, Michael Rethmeier

German Scientific Laser Society (WLT e.V.)



WLT Award Ceremony

Ludger Overmeyer

German Scientific Laser Society (WLT e.V.)



Presentation of the WLT Award Laureate

WLT Award Laureate

German Scientific Laser Society (WLT e.V.)

2:00pm
-
3:00pm
LiM Keynote Session
Location: Room 1
Chair: Prof. Michael Rethmeier, Bundesanstalt für Materialforschung und -prüfung (BAM), Germany
 

Keynote Talk: Trends and prospective of additive manufacturing of large metal parts

Gleb Andreevich Turichin

SMTU, Peter the Great St.Petersburg Polytechnic University, Russia



Keynote Talk: Emission of X-rays during ultrashort pulse laser processing

Herbert Legall, Jörn Bonse, Jörg Krüger

Bundesanstalt für Materialforschung und -prüfung (BAM), Germany

3:30pm
-
4:45pm
Joint Session with CLEO/Europe: Micro Machining
Location: Room 1
Chair: Prof. Emmanuel I. Stratakis, Institute of Electronic Structure and Lasers, Greece
 
3:30pm - 3:45pm

High speed temperature measurement in ultrashort pulse laser micromachining

Jiri Martan, Lucie Prokešová, Denys Moskal, Bernardo Campos Ferreira de Faria, Milan Honner, Vladislav Lang

University of West Bohemia, Czech Republic



3:45pm - 4:00pm

Ultrafast laser micromachining of x-ray gratings and sub-micron hole patterns with differ ents beam shapes

Romain Carreto1, Beat Lüscher1, Ronald Holtz1, Bojan Resan1,2

1: Institute of Product and Production Engineering (IPPE), University of Applied Sciences and Arts Northwestern Switzerland (FHNW), Switzerland; 2: Faculty of Medicine, Josip Juraj Strossmayer University, Croatia



4:00pm - 4:15pm

Laser shock micro-forming of stainless steel: thermal effects at high repetition ps-pulses

David Munoz-Martin1,2, José Manuel López1,3, Miguel Morales1,3, Laura Rivera1,4, Juan José Moreno-Labella1,3, Arturo Chávez-Chávez4, Gilberto Gomez-Rosas4, Carlos Molpeceres1,3

1: Centro Láser, Universidad Politécnica de Madrid, Spain; 2: Escuela Técnica Superior de Ingeniería y Diseño Industrial, Universidad Politécnica de Madrid, Spain; 3: Escuela Técnica Superior de Ingeniería Industrial, Universidad Politécnica de Madrid, Spain; 4: Departamento de Física, Centro Universitario de Ciencias Exactas e Ingeniería, Universidad de Guadalajara, Guadalajara, Jalisco, Mexico.



4:15pm - 4:30pm

Femtosecond laser micromachining and rocket propulsion of microparticles optically trapped in hollow-core photonic crystal fibre

Mariia Romodina, Shangran Xie, Abhinav Sharma, Francesco Tani, Philip Russel

Max Planck Institute for the Science of Light, Germany



4:30pm - 4:45pm

Cut edge quality in laser ablation of micrometer-scale grating structures

Meike Zilm, Tim Radel

Bremer Institut für angewandte Strahltechnik GmbH, Germany

Date: Tuesday, 22/June/2021
10:00am
-
11:00am
Macro: Welding, Steel
Location: Room 1
Chair: Prof. Michael Rethmeier, Bundesanstalt für Materialforschung und -prüfung (BAM), Germany
 
10:00am - 10:15am

High-power joining of duplex steels using laser beam-submerged arc hybrid welding

Rabi Lahdo1, Sarah Nothdurft1, Jörg Hermsdorf1, Patrick Urbanek2, Markus Puschmann2, Frank Riedel2, Stefan Kaierle1, Ludger Overmeyer1

1: Laser Zentrum Hannover e.V., Germany; 2: Fraunhofer-Institut für Werkzeugmaschinen und Umformtechnik IWU, Germany



10:15am - 10:30am

Joining ultra-high strength steels by edge welds

Christoph Wendt1, Martin Dahmen2, Viktoria Olfert3, Alexander Sagel1

1: Scansonic MI, Schwarze-Pumpe-Weg 16, 12681 Berlin, Germany; 2: Fraunhofer Institute for Laser Technology, Steinbachstrasse 15, 52074 Aachen, Germany; 3: Laboratory for Material and Joining Technology, Paderborn University.Pohlweg 47-49, 33098 Paderborn, Germany



10:30am - 10:45am

Joining technology and mechanical properties of laser-beam welded joints with martensitic chromium steels

Martin Dahmen1, Jörg Baumgartner4, Benjamin Möller2, Viktoria Olfert3, Rainer Wagener2

1: Fraunhofer Institute for Laser Technology, Germany; 2: Fraunhofer Institute for Structural Durability and System Reliability, Bartningstrasse 47, 64289 Darmstadt, Germany; 3: Laboratory for Material and Joining Technology, Paderborn University.Pohlweg 47-49, 33098 Paderborn, Germany; 4: Technical University of Darmstadt, Mechanical Engineering Department, Research Group SAM, Otto-Berndt-Strasse 2, 64287 Darmstadt, Germany



10:45am - 11:00am

Impact of sulphur content on spattering and weld seam shape in steel specimens using modified side-gas application technique

Goran Jovic1,4, Axel Bormann1, Johannes Proell2, Thomas Niendorf3, Stefan Boehm4

1: Robert Bosch GmbH, Manufacturing Center of Competence Laser Welding, Am Börstig 2, 96052 Bamberg, Germany; 2: Robert Bosch GmbH, BaP/TEF1.2 – Laser Material Processing and Joining Technology, Am Börstig 2, 96052 Bamberg, Germany; 3: Institute of Materials Engineering – Metallic Alloys, University of Kassel, Mönchebergstr. 3, 34125 Kassel, Germany; 4: Department for Cutting and Joining Manufacturing Processes, University of Kassel, Kurt-Wolters-Str. 3, 34125 Kassel, Germany

11:15am
-
12:30pm
Macro: Welding Simulation
Location: Room 1
Chair: Eveline Reinheimer, Universität Stuttgart, Institut für Strahlwerkzeuge, Germany
 
11:15am - 11:45am

Invited Talk: Numerical Simulations as Versatile Tool for Understanding and Optimizing Laser Material Processing

Andreas Otto, M. Buttazzoni, C. Zenz

Vienna University of Technology, Austria



11:45am - 12:00pm

Experimental and numerical analysis of local gas supplies for spatter reduced high speed laser beam welding

Leander Schmidt, Klaus Schricker, Jean Pierre Bergmann

Technische Universität Ilmenau, Production Technology Group, Germany



12:00pm - 12:15pm

Numerical study of the bulging effect in deep penetration laser beam welding

Antoni Artinov1, Xiangmeng Meng1, Marcel Bachmann1, Michael Rethmeier3,1,2

1: BAM Federal Institute for Materials Research and Testing, Germany; 2: Fraunhofer Institute for Production Systems and Design Technology, Pascalstraße 8-9, 10587 Berlin, Germany; 3: Institute of Machine Tools and Factory Management, Technische Universität Berlin, Pascalstraße 8-9, 10587 Berlin, Germany



12:15pm - 12:30pm

Numerical simulation of power control in laser-assisted metal-polymer joining

Klaus Schricker, Jean Pierre Bergmann

Technische Universität Ilmenau, Production Technology Group, Germany

1:30pm
-
2:30pm
Macro: Welding, Cu and Al
Location: Room 1
Chair: Sarah Nothdurft, Laser Zentrum Hannover e.V., Germany
 
1:30pm - 1:45pm

Influence of beam parameters on the capillary formation and the depth progress in laser spot welding of copper

Frauke Faure, Rudolf Weber, Thomas Graf

Institut für Strahlwerkzeuge (IFSW), University of Stuttgart, Pfaffenwaldring 43, 70569 Stuttgart, Germany



1:45pm - 2:00pm

Influence of defocusing in deep penetration welding of copper by using visible wavelengths

Florian Kaufmann1, Jakob Ermer1,2, Andreas Maier1, Markus Müller1, Stephan Roth1,2, Michael Schmidt1,2,3

1: Bayerisches Laserzentrum GmbH (blz), Germany; 2: Erlangen Graduate School in Advances Optical Technologies (SAOT); 3: Institute of Photonic Technologies (LPT)



2:00pm - 2:15pm

Process control of aluminum-copper mixed joints during laser beam welding in vacuum

Uwe Reisgen, Simon Olschok, Niklas Holtum, Christian Frey

RWTH Aachen University - Welding and Joining Institute ISF, Aachen, 52062, GERMANY



2:15pm - 2:30pm

Remote laser beam welding of copper to aluminum using a frequency-doubled disk laser

Lazar Tomcic, Christoph Neumeier, Michael F. Zaeh

Technical University of Munich, Institute for Machine Tools and Industrial Management, Germany

2:45pm
-
4:00pm
Beam Shaping
Location: Room 1
Chair: Dr. Klaus Schricker, Technische Universität Ilmenau, Germany
 
2:45pm - 3:00pm

Beam shaping with free-form optics for optimal material processing

Ulrike Fuchs1, Henrike Wilms1, Stephan Gräf2

1: asphericon GmbH, Germany; 2: Otto Schott Institute of Materials Research (OSIM), FSU Jena, Germany



3:00pm - 3:15pm

Cleaving tailored edges and curved surfaces of transparent materials by ultrafast lasers through advanced beam shaping concepts

Daniel Flamm, Jonas Kleiner, Myriam Kaiser, Felix Zimmermann, Daniel Grossmann, Max Kahmann

TRUMPF Laser- und Systemtechnik GmbH, Germany



3:15pm - 3:30pm

Simulations on beam shaping in LPBF processes

Pareekshith Allu1, Frieder Semler2

1: Flow Science Inc., United States of America; 2: Flow Science Deutschland GmbH, Germany

Date: Wednesday, 23/June/2021
10:00am
-
11:00am
Macro: Welding, Aluminum
Location: Room 1
Chair: Prof. Thomas Graf, University of Stuttgart, Germany
 
10:00am - 10:15am

Remote laser welding of die casting aluminum parts for automotive applications with beam oscillation and adjustable ring mode laser

Mikhail Sokolov, Pasquale Franciosa, Dariusz Ceglarek

WMG, University of Warwick, United Kingdom



10:15am - 10:30am

Analytical approach for the transition to an equiaxed dendritic solidification during laser beam welding of aluminium alloys

Constantin Böhm1, Yassin Nasr1, Jonas Wagner2, Christian Hagenlocher2, Stefan Weihe1

1: University of Stuttgart, Materials Testing Institute (MPA), Pfaffenwaldring 32, 70569 Stuttgart, Germany; 2: University of Stuttgart, Institut für Strahlwerkzeuge (IFSW), Pfaffenwaldring 43, 70569 Stuttgart, Germany



10:30am - 10:45am

High-speed synchrotron X-ray investigation of full penetration welding of aluminum sheets

Jonas Wagner1, Christian Hagenlocher1, Marc Hummel2, Alexander Olowinsky3, Rudolf Weber1, Thomas Graf1

1: Institut für Strahlwerkezuge (IFSW), Universität Stuttgart, Germany; 2: Chair for Laser Technology LLT, RWTH Aachen University, Germany; 3: Fraunhofer Institute for Laser Technology ILT, Aachen, Germany

11:15am
-
12:30pm
Macro: Joining 1
Location: Room 1
Chair: Dr. Andrey Gumenyuk, Bundesanstalt für Material Forschung und -prüfung (BAM), Germany
 
11:15am - 11:30am

Investigations on the weld seam geometry of ultrasonic assisted laser beam welded round bars in and beside antinode position

Jan Grajczak1, Christian Nowroth2, Sarah Nothdurft1, Jörg Hermsdorf1, Jens Twiefel2, Jörg Wallaschek2, Stefan Kaierle1

1: Laser Zentrum Hannover e.V., Germany; 2: Gottfried Wilhelm Leibniz Universität Hannover



11:30am - 11:45am

Observation of the weld pool shape in partial penetration welding and its influence on solidification crack formation for high-power laser beam welding

Nasim Bakir1, Ömer Üstündag1, Andrey Gumenyuk1,2, Michael Rethmeier3,1,2

1: Bundesanstalt für Materialforschung und -prüfung (BAM), Germany; 2: Fraunhofer Institute for Production Systems and Design Technology; 3: Institute of Machine Tools and Factory Management, Technische Universität Berlin



11:45am - 12:00pm

Occurrence of coating-related accumulations within the seam in laser beam deep penetration welding of aluminum-silicon coated press-hardened steels

Benjamin Karwoth, Thorsten Mattulat, Peer Woizeschke

Bremer Institut für angewandte Strahltechnik GmbH, Germany



12:00pm - 12:15pm

Thermal cycles and cahrpy impact toughness of single-pass hybrid laser-arc welded thick-walled steels

Ömer Üstündag1, Nasim Bakir1, Andrey Gumenyuk1,2, Michael Rethmeier3,1,2

1: Bundesanstalt für Materialforschung und -prüfung, Germany; 2: Fraunhofer Institute for Production Systems and Design Technology; 3: Institute of Machine Tools and Factory Management, TU Berlin



12:15pm - 12:30pm

Non-contact focus spot and focus shift measurement of high power lasers in the manufacturing of differential gears

Nicolas Meunier

MKS Instruments - Ophir Brand, Germany

1:30pm
-
2:30pm
Macro: Joining 2
Location: Room 1
Chair: Artur Leis, University of Stuttgart, Germany
 
1:30pm - 1:45pm

Correlation between the spatial weld seam morphology and the spatial-temporal temperature profile in laser transmission welding of polypropylene

Thomas Stichel1, Edgar Mayer1, Stephan Roth1,3, Michael Schmidt1,2,3

1: Bayerisches Laserzentrum GmbH (blz), Germany; 2: University of Erlangen-Nürnberg, Institute of Photonic Technologies, Germany; 3: Erlangen Graduate School in Advanced Optical Technologies (SAOT), Germany



1:45pm - 2:00pm

Investigations on the transmissivity and scattering behavior of additively manufactured components for laser transmission welding applications

Julian Kuklik, Verena Wippo, Peter Jaeschke, Stefan Kaierle, Ludger Overmeyer

Laser Zentrum Hannover e.V., Germany



2:00pm - 2:15pm

Methodology for analyzing the influence of contact temperatures in laser beam brazing

Sven Müller, Peer Woizeschke

BIAS - Bremer Institut für angewandte Strahltechnik GmbH, Germany



2:15pm - 2:30pm

Prediction of Cu-Al weld status using convolutional neural network

Karthik Mathivanan, Peter Plapper

University of Luxembourg, Luxembourg

2:45pm
-
4:00pm
Macro: Joining 3
Location: Room 1
Chair: Frauke Faure, University of Stuttgart, Pfaffenwaldring 43, 70569 Stuttgart, Germany, Germany
 
2:45pm - 3:00pm

Effects of separately laser-induced metal vapor amounts on the stability of a TIG arc

Insa Henze, Thorsten Mattulat, Peer Woizeschke

BIAS-Bremer Institut für angewandte Strahltechnik GmbH, Bremen, Germany



3:00pm - 3:15pm

Laser process manipulation by axial beam shaping

Joerg Volpp1, Adrien Da Silva1, Alexander Laskin2

1: Luleå University of Technology, Sweden; 2: AdlOptica GmbH, Germany



3:15pm - 3:30pm

Spatter formation in high-speed laser processing of high-alloyed steel

Peter Hellwig, Klaus Schricker, Jean Pierre Bergmann

Technische Universität Ilmenau, Production Technology Group, Germany



3:30pm - 3:45pm

High-speed synchrotron X-ray imaging of the formation of wedge-shaped capillaries during laser beam welding at high feed rates

Eveline Reinheimer1, Marc Hummel2, Alexander Olowinsky3, Rudolf Weber1, Thomas Graf1

1: Universität Stuttgart, Institut für Strahlwerkzeuge, Pfaffenwaldring 43, 70569 Stuttgart; 2: Chair for Laser Technology LLT, RWTH Aachen University, Steinachstraße 15, 52074 Aachen; 3: Fraunhofer Institute for Laser Technology ILT, Steinbachstraße 15, 52074 Aachen



3:45pm - 4:15pm

Invited Talk: Melt-track merging and instabilities in multi-laser additive manufacturing

Craig B. Arnold, Wenxuan Zhang, Wenyuan Hou

Princeton Institute for the Science and Technology of Materials, Princeton University, United States of America

Date: Thursday, 24/June/2021
10:00am
-
11:00am
Macro: Surface Treatment
Location: Room 1
Chair: Daniel Holder, University of Stuttgart, Germany
 
10:00am - 10:15am

Effect of femtosecond laser shock peening on surface morphology and hardness of nickel titanium alloy

Hao Wang1, Evgeny L. Gurevich2, Andreas Ostendorf1

1: Ruhr-Universität Bochum; 2: Münster University of Applied Sciences



10:15am - 10:30am

Influence of multi-pass laser hardening on surface residual stress and distortion

Yang Lu1, Heiner Meyer2, Tim Radel1

1: Bremer Institut für angewandte Strahltechnik GmbH; 2: Leibniz-Institut für Werkstofforientierte Technologien



10:30am - 10:45am

Interaction between laser radiation and antifouling coating underwater

Stanislav Zimbelmann1, Benjamin Emde1, Jörg Hermsdorf1, Stefan Kaierle1, Tim Heusinger von Waldegge2, Dorothea Stübing2, Markus Baumann3

1: Laser Zentrum Hannover e.V., Germany; 2: Fraunhofer IFAM, Germany; 3: Laserline GmbH, Germany



10:45am - 11:00am

Laser cleaning as a productive surface post-treatment method for LPBF parts

Markus Hofele1,2, Johannes Neuer1, Malena Lindenberger-Ullrich1, Jochen Schanz1,2, David K. Harrison2, Anjali K. M. De Silva2, Harald Riegel2

1: Aalen University, Germany; 2: Glasgow Caledonian University, United Kingdom

11:15am
-
12:30pm
Micro: Joining (Welding and Brazing)
Location: Room 1
Chair: Florian Kaufmann, Bayerisches Laserzentrum GmbH (blz), Germany
 
11:15am - 11:30am

OCT keyhole depth measurement in copper micro welding

Tobias Beck

Robert Bosch GmbH, Germany



11:30am - 11:45am

Determination of thermophysical process limitations for the laser-based droplet brazing process using different droplet and substrate materials

Jakob Ermer1,3, Florian Kohlmann1, Markus Müller1, Florian Kaufmann1, Stephan Roth1,3, Michael Schmidt1,2,3

1: Bayerisches Laserzentrum GmbH (blz), Konrad-Zuse-Straße 2-6, 91052 Erlangen, Germany; 2: Institute of Photonic Technologies (LPT), Friedrich-Alexander-Universität Erlangen-Nürnberg, Konrad-Zuse-Straße 3-5, 91052 Erlangen, Germany; 3: Erlangen Graduate School in Advanced Optical Technologies (SAOT), Paul-Gordan-Straße 6, 91052 Erlangen, Germany



11:45am - 12:00pm

Temporally and spatially highly resolved reconstruction of vapor capillary geometry during laser beam welding using synchrotron radiation

Marc Hummel1, André Häusler2, Sören Hollatz2, Christian Hagenlocher3, Jannik Lind3, Ulrich Halm4, Christoph Schöler4, Alexander Olowinsky2, Arnold Gillner1,2

1: RWTH Aachen University, Chair for Laser Technology LLT, Germany; 2: Fraunhofer Institute for Laser Technology LLT, Germany; 3: University of Stuttgart, Institut für Strahlwerkzeuge IFSW, Germany; 4: RWTH Aachen University, Nonlinear Dynamics of Laser Manufacturing Processes NLD, Germany



12:00pm - 12:15pm

Direct welding of glass and copper with a large gap by femtosecond laser pulse bursts

Qingfeng LI1, Gabor Matthäus1, Stefan Nolte1,2

1: Institute of Applied Physics, Abbe Center of Photonics, Friedrich Schiller University Jena, Albert-Einstein-Straße 15, 07745 Jena, Germany; 2: Fraunhofer Institute for Applied Optics and Precision Engineering IOF, Center of Excellence in Photonics, Albert-Einstein-Straße 7, 07745 Jena, Germany



12:15pm - 12:30pm

Investigations on the influence of the material selection of the clamping device during laser transmission welding of multi-layer polymer films with wavelength-adapted laser beam sources

Maximilian Brosda, Phong Nguyen, Alexander Olowinsky, Arnold Gillner

Fraunhofer-Institut für Lasertechnik ILT, Germany

1:30pm
-
2:30pm
Macro: Beam Oscillation
Location: Room 1
Chair: Prof. Thomas Graf, University of Stuttgart, Germany
 
1:30pm - 1:45pm

High speed videography of gap bridging with beam oscillation and wire feeding during the laser welding of stainless steel and aluminum alloys

Davide Maria Boldrin, Matteo Colopi, Simone D'Arcangelo, Leonardo Caprio, Ali Gökhan Demir, Barbara Previtali

Politecnico di Milano, Italy



1:45pm - 2:00pm

Influence of laser beam welding with overlaid high-frequency beam oscillation on weld seam quality and fatigue strength of aluminium wrought and die-cast joints

Benjamin Keßler, Dirk Dittrich, Robert Kühne, Markus Wagner, Axel Jahn

Fraunhofer Institute for Material and Beam Technology IWS, Dresden



2:00pm - 2:15pm

Investigation of the influence of beam oscillation on the laser beam cutting process using high-speed X-ray imaging

Jannik Lind1,2, Jonas Wagner1, Niklas Weckenmann2, Weber Rudolf1, Thomas Graf1

1: Institut für Strahlwerkzeuge (IFSW), University of Stuttgart, Germany; 2: Precitec GmbH & Co. KG, Germany



2:15pm - 2:30pm

CFD simulations for laser oscillation welding

Pareekshith Allu1, Frieder Semler2

1: Flow Science Inc., United States of America; 2: Flow Science Deutschland GmbH, Germany

2:45pm
-
4:00pm
Macro: Welding, Dissimilar Materials
Location: Room 1
Chair: Oliver Seffer, Laser Zentrum Hannover e.V., Germany
 
2:45pm - 3:00pm

Vapor plume behavior during a standalone laser pulse on the dissimilar aluminum/titanium interface: high-speed imaging with 810 nm band-pass filter

Manoj Raja Kumar, Iryna Tomashchuk, Jean-Marie Jouvard, Melanie Duband

Université de Bourgogne Franche-Comté, France



3:00pm - 3:15pm

New strategies for joining of aluminum alloys to steel by means of laser

Daniel Wallerstein1, Antti Salminen2, Fernando Lusquiños1, Rafael Comesaña3, Jesús del Val1, Antonio Riveiro3, Aida Badaoui3, Juan Pou1

1: CINTECX, University of Vigo, LaserON Research Group, Vigo, SPAIN; 2: Department of Mechanical and Materials Engineering, University of Turku, Turku, FINLAND; 3: Materials Engineering, Applied Mechanics and Construction Dpt., University of Vigo, EEI, Vigo, SPAIN



3:15pm - 3:30pm

Joining dissimliar materials: a new approach based on laser beam welding and melt displacement by electromagnetic forces

Jennifer Heßmann, Marcel Bachmann, Kai Hilgenberg

BAM, Germany



3:30pm - 3:45pm

Temperature measurement for heat conduction laser joining of metals to polymers

Mahdi Amne Elahi, Max Hennico, Peter Plapper

University of Luxembourg, Luxembourg



3:45pm - 4:00pm

Metallurgy of dissimilar laser beam welded lap joints of supra-ductile and ultra-high strength steels

Martin Dahmen, Berkan Deniz, Dirk Petring

Fraunhofer Institute for Laser Technology, Steinbachstrasse 15, 52014 Aachen, Germany

4:00pm
-
4:10pm
Closing Session
Location: Room 1
Chair: Prof. Michael Rethmeier, Bundesanstalt für Materialforschung und -prüfung (BAM), Germany

 
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