ICALEO 2012 Paper #706 (Twinquasi - A New Method for Quasi-Simultaneous Laser Welding of Polymers)

Twinquasi – A New Method for Quasi-Simultaneous Laser Welding of Polymers
Authors:
Saara Ruotsalainen, VTT Technical Research Centre of Finland; Lappeenranta Finland
Petri Laakso, VTT Technical Research Centre of Finland; Lappeenranta Finland
Matti Manninen, Lappeenranta Univ. of Technology; Lappeenranta
Tuomas Purtonen, Lappeenranta Univ. of Technology; Lappeenranta
Veli Kujanpää, VTT Technical Research Centre of Finland; Lappeenranta
Antti Salminen, Lappeenranta Univ. of Technology; Lappeenranta
Presented at ICALEO 2012

Quasi-simultaneous laser welding (QSLW) of polymers has been studied, developed and used in indust...

ICALEO 2012 Paper #701 (Electromagnetic Control of the Weld Pool Dynamics in Partial Penetration Laser Beam Welding of Aluminium Alloys)

Electromagnetic Control of the Weld Pool Dynamics in Partial Penetration Laser Beam Welding of Aluminium Alloys
Authors:
Vjaceslav Avilov, Federal Institute for Materials Research and Testing (BAM); Berlin Germany
André Schneider, Federal Institute for Materials Research and Testing (BAM); Berlin Germany
Marco Lammers, Federal Institute for Materials Research and Testing (BAM); Berlin Germany
Andrey Gumenyuk, Federal Institute for Materials Research and Testing (BAM); Berlin Germany
Michael Rethmeier, Federal Institute for Materials Research and Testing (BAM); Berlin Germany
Presented at ICALEO 2012

An oscillating (AC) magnet field was used t...

ICALEO 2012 Paper #610 (With Fieldbus Interfaces and Robust Design Laser Beam Monitoring Meets the Requirements of Applications in Production)

With Fieldbus Interfaces and Robust Design Laser Beam Monitoring Meets the Requirements of Applications in Production
Authors:
Otto Märten, PRIMES GmbH; -
Stefan Wolf, PRIMES GmbH; Pfungstadt
Harald Schwede, PRIMES GmbH; Pfungstadt
Volker Brandl, PRIMES GmbH; Pfungstadt Germany
Reinhard Kramer, PRIMES GmbH; Pfungstadt Germany
Presented at ICALEO 2012

With laser material processing, the properties of laser beams are important parameters for achieving and maintaining high processing quality. Laser power pulse energy, but also beam distribution and size at the work piece as well as the beam propagation parameters, are strongly correlated t...

ICALEO 2012 Paper #609 (The Study About the Algorithm of the Detecting Feature on Weld Images During Laser Welding Processes)

The Study About the Algorithm of the Detecting Feature on Weld Images During Laser Welding Processes
Authors:
Chen Xinsong, National Key Laboratory of Science and Technology on Power Beam Processes, BAMTRI; Beijing Peoples Republic of China
Duan Aiqin, National Key Laboratory of Science and Technology on Power Beam Processes, BAMTRI; Beijing Peoples Republic of China
Wang Bin, National Key Laboratory of Science and Technology on Power Beam Processes, BAMTRI; Beijing Peoples Republic of China
Presented at ICALEO 2012

In laser welding important components, precise seam tracking usually needs to be used to assure the quality of final weld, because of small laser beam focu...

ICALEO 2012 Paper #607 (Analysis of Coaxial Vision Systems for Real-Time Z-Height Control for Laser Cladding Process)

Analysis of Coaxial Vision Systems for Real-Time Z-Height Control for Laser Cladding Process
Authors:
Rezak Mezari, STAMP - Arts et Métiers ParisTech; Paris France
Pascal Aubry, STAMP - Arts et Métiers ParisTech; Paris France
Thierry Malot, STAMP - Arts et Métiers ParisTech; Paris France
Kevin Verdier, STAMP - Arts et Métiers ParisTech; Paris France
Presented at ICALEO 2012

In order to generate 3D complex structures by laser metal deposition, especially for Direct Manufacturing of parts where the number of deposited layers can be high, it is necessary to control the width and the height of the deposited material. First, we present a general overview o...

ICALEO 2012 Paper #606 (Diagnostics of the CO2-Laser Cutting Process by Evaluating the Back-Reflected Laser Power)

Diagnostics of the CO2-Laser Cutting Process by Evaluating the Back-Reflected Laser Power
Authors:
David Schindhelm, GSaME Graduste School of Excellence Advanced Manufacturing Engineering; Stuttgart Germany
Rudolf Weber, IFSW Institut fuer Strahlwerkzeuge; Stuttgart Germany
Thomas Graf, IFSW Institut fuer Strahlwerkzeuge; Stuttgart Germany
Presented at ICALEO 2012

In this report we analyze the information content of back reflected laser light during high-power CO2-laser cutting of metal sheets. A fast sensor which is mounted coaxially to the beam path of a CO2-laser cutting machine behind a scraper mirror detects the back reflected laser power from the interaction zone...

ICALEO 2012 Paper #605 (Comprehensive Monitoring and Control of Laser Hybrid Arc Welding in Industrial Production)

Comprehensive Monitoring and Control of Laser Hybrid Arc Welding in Industrial Production
Authors:
Jan Karlsson, Department of Engineering Sciences and Mathematics, Luleå University of Technology; Luleå USA
Alexander F. H. Kaplan, Department of Engineering Sciences and Mathematics, Luleå University of Technology; Luleå Sweden
Presented at ICALEO 2012

Welding requires acceptable quality along the entire weld. In particular, the weld surface geometry has a vital role in ensuring an adequate fatigue life. This paper describes the results of a case study of laser hybrid arc welding of a structural vehicle component of complex geometry. By isolating the various weld geometries, alo...

ICALEO 2012 Paper #604 (Detection of Faults in Laser Beam Welds by Near-Infrared Camera Observation)

Detection of Faults in Laser Beam Welds by Near-Infrared Camera Observation
Authors:
Friedhelm Dorsch, TRUMPF Werkzeugmaschinen GmbH & Co. KG; Ditzingen Germany
Holger Braun, TRUMPF Werkzeugmaschinen GmbH & Co. KG; Ditzingen Germany
Steffen Keler, TRUMPF Werkzeugmaschinen GmbH & Co. KG; Ditzingen Germany
Dieter Pfitzner, TRUMPF Werkzeugmaschinen GmbH & Co. KG; Ditzingen Germany
Volker Rominger, TRUMPF Laser- und Systemtechnik GmbH; Ditzingen Germany
Presented at ICALEO 2012

We monitor thin disk laser beam welding processes coaxially through the welding optics with a camera that is sensitive in the near-infrared spectrum (1000 to 1800 nm). Wi...

ICALEO 2012 Paper #602 (Process Monitoring and Control for Laser-Based Thin Film Treatment)

Process Monitoring and Control for Laser-Based Thin Film Treatment
Authors:
Christian Vedder, Fraunhofer Institute for Laser Technology (ILT); Aachen Germany
Jochen Stollenwerk, Fraunhofer Institute for Laser Technology (ILT), Chair for the Technology of Optical Systems TOS, RWTH Aachen Univ.; -
Konrad Wissenbach, Fraunhofer Institute for Laser Technology (ILT); -
Presented at ICALEO 2012

Thin films are powerful tools for improving performance and increasing the scope of technical components in many areas of modern life. In many cases, thin film processing is a 2-step process involving film deposition (e.g., inkjet, screen printing) followed by heat treatment, to o...

ICALEO 2012 Paper #509 (Structure of Ni-Alloys Deposited by Laser Powder Deposition on Single Crystal Superalloy Substrates)

Structure of Ni-Alloys Deposited by Laser Powder Deposition on Single Crystal Superalloy Substrates
Authors:
Rui Vilar, Instituto Superior Técnico and ICEMS Instituto de Ciência e Engenharia de Materiais e Superfícies, Univ. Tecnica de Lisboa; Lisbon Portugal
Amelia Almeida, Instituto Superior Técnico and ICEMS Instituto de Ciência e Engenharia de Materiais e Superfícies, Univ. Tecnica de Lisboa; -
Edson Costa, Department of Mechanical Engineering, Kyushu Univ.; -
Presented at ICALEO 2012

Laser Powder Deposition is becoming one of the most promising methods for the repairing of the single crystal Ni-based superalloys components presently used in the h...